Marked all 'integrational, e2e' as skipped in the --short mode.
Thanks to this we will be able to significantly simplify ./test script.
The run currently takes ~23s.
With (follow up) move of ~clientv3/snapshot to integration tests (as
part of modularization), we can expect this to fall to 5-10s.
```
% time go test --short ./... --count=1
ok go.etcd.io/etcd/v3 0.098s
? go.etcd.io/etcd/v3/Documentation/learning/lock/client [no test files]
? go.etcd.io/etcd/v3/Documentation/learning/lock/storage [no test files]
ok go.etcd.io/etcd/v3/auth 0.724s
? go.etcd.io/etcd/v3/auth/authpb [no test files]
ok go.etcd.io/etcd/v3/client 0.166s
ok go.etcd.io/etcd/v3/client/integration 0.166s
ok go.etcd.io/etcd/v3/clientv3 3.219s
ok go.etcd.io/etcd/v3/clientv3/balancer 1.102s
? go.etcd.io/etcd/v3/clientv3/balancer/connectivity [no test files]
? go.etcd.io/etcd/v3/clientv3/balancer/picker [no test files]
? go.etcd.io/etcd/v3/clientv3/balancer/resolver/endpoint [no test files]
ok go.etcd.io/etcd/v3/clientv3/clientv3util 0.096s [no tests to run]
ok go.etcd.io/etcd/v3/clientv3/concurrency 3.323s
? go.etcd.io/etcd/v3/clientv3/credentials [no test files]
ok go.etcd.io/etcd/v3/clientv3/integration 0.131s
? go.etcd.io/etcd/v3/clientv3/leasing [no test files]
? go.etcd.io/etcd/v3/clientv3/mirror [no test files]
ok go.etcd.io/etcd/v3/clientv3/namespace 0.041s
ok go.etcd.io/etcd/v3/clientv3/naming 0.115s
ok go.etcd.io/etcd/v3/clientv3/ordering 0.121s
ok go.etcd.io/etcd/v3/clientv3/snapshot 19.325s
ok go.etcd.io/etcd/v3/clientv3/yaml 0.090s
ok go.etcd.io/etcd/v3/contrib/raftexample 7.572s
? go.etcd.io/etcd/v3/contrib/recipes [no test files]
ok go.etcd.io/etcd/v3/embed 0.282s
ok go.etcd.io/etcd/v3/etcdctl 0.054s
? go.etcd.io/etcd/v3/etcdctl/ctlv2 [no test files]
ok go.etcd.io/etcd/v3/etcdctl/ctlv2/command 0.117s
? go.etcd.io/etcd/v3/etcdctl/ctlv3 [no test files]
ok go.etcd.io/etcd/v3/etcdctl/ctlv3/command 0.070s
ok go.etcd.io/etcd/v3/etcdmain 0.172s
ok go.etcd.io/etcd/v3/etcdserver 1.698s
? go.etcd.io/etcd/v3/etcdserver/api [no test files]
ok go.etcd.io/etcd/v3/etcdserver/api/etcdhttp 0.075s
ok go.etcd.io/etcd/v3/etcdserver/api/membership 0.104s
? go.etcd.io/etcd/v3/etcdserver/api/membership/membershippb [no test files]
ok go.etcd.io/etcd/v3/etcdserver/api/rafthttp 0.181s
ok go.etcd.io/etcd/v3/etcdserver/api/snap 0.078s
? go.etcd.io/etcd/v3/etcdserver/api/snap/snappb [no test files]
ok go.etcd.io/etcd/v3/etcdserver/api/v2auth 0.142s
ok go.etcd.io/etcd/v3/etcdserver/api/v2discovery 0.035s
ok go.etcd.io/etcd/v3/etcdserver/api/v2error 0.043s
ok go.etcd.io/etcd/v3/etcdserver/api/v2http 0.070s
ok go.etcd.io/etcd/v3/etcdserver/api/v2http/httptypes 0.031s
? go.etcd.io/etcd/v3/etcdserver/api/v2stats [no test files]
ok go.etcd.io/etcd/v3/etcdserver/api/v2store 0.645s
ok go.etcd.io/etcd/v3/etcdserver/api/v2v3 0.218s
? go.etcd.io/etcd/v3/etcdserver/api/v3alarm [no test files]
? go.etcd.io/etcd/v3/etcdserver/api/v3client [no test files]
ok go.etcd.io/etcd/v3/etcdserver/api/v3compactor 1.765s
? go.etcd.io/etcd/v3/etcdserver/api/v3election [no test files]
? go.etcd.io/etcd/v3/etcdserver/api/v3election/v3electionpb [no test files]
? go.etcd.io/etcd/v3/etcdserver/api/v3election/v3electionpb/gw [no test files]
? go.etcd.io/etcd/v3/etcdserver/api/v3lock [no test files]
? go.etcd.io/etcd/v3/etcdserver/api/v3lock/v3lockpb [no test files]
? go.etcd.io/etcd/v3/etcdserver/api/v3lock/v3lockpb/gw [no test files]
ok go.etcd.io/etcd/v3/etcdserver/api/v3rpc 0.091s
ok go.etcd.io/etcd/v3/etcdserver/api/v3rpc/rpctypes 0.012s
ok go.etcd.io/etcd/v3/etcdserver/cindex 0.054s
ok go.etcd.io/etcd/v3/etcdserver/etcdserverpb 0.039s
? go.etcd.io/etcd/v3/etcdserver/etcdserverpb/gw [no test files]
ok go.etcd.io/etcd/v3/functional/agent 0.094s
? go.etcd.io/etcd/v3/functional/cmd/etcd-agent [no test files]
? go.etcd.io/etcd/v3/functional/cmd/etcd-proxy [no test files]
? go.etcd.io/etcd/v3/functional/cmd/etcd-runner [no test files]
? go.etcd.io/etcd/v3/functional/cmd/etcd-tester [no test files]
ok go.etcd.io/etcd/v3/functional/rpcpb 0.060s
? go.etcd.io/etcd/v3/functional/runner [no test files]
ok go.etcd.io/etcd/v3/functional/tester 0.079s
ok go.etcd.io/etcd/v3/integration 0.684s
ok go.etcd.io/etcd/v3/integration/embed 0.101s
ok go.etcd.io/etcd/v3/lease 3.455s
ok go.etcd.io/etcd/v3/lease/leasehttp 2.185s
? go.etcd.io/etcd/v3/lease/leasepb [no test files]
ok go.etcd.io/etcd/v3/mvcc 7.246s
ok go.etcd.io/etcd/v3/mvcc/backend 0.354s
? go.etcd.io/etcd/v3/mvcc/mvccpb [no test files]
ok go.etcd.io/etcd/v3/pkg/adt 0.025s
? go.etcd.io/etcd/v3/pkg/contention [no test files]
? go.etcd.io/etcd/v3/pkg/cpuutil [no test files]
ok go.etcd.io/etcd/v3/pkg/crc 0.008s
? go.etcd.io/etcd/v3/pkg/debugutil [no test files]
ok go.etcd.io/etcd/v3/pkg/expect 0.015s
ok go.etcd.io/etcd/v3/pkg/fileutil 0.268s
ok go.etcd.io/etcd/v3/pkg/flags 0.021s
ok go.etcd.io/etcd/v3/pkg/httputil 0.020s
ok go.etcd.io/etcd/v3/pkg/idutil 0.008s
ok go.etcd.io/etcd/v3/pkg/ioutil 0.025s
ok go.etcd.io/etcd/v3/pkg/logutil 0.047s
? go.etcd.io/etcd/v3/pkg/mock/mockserver [no test files]
? go.etcd.io/etcd/v3/pkg/mock/mockstorage [no test files]
? go.etcd.io/etcd/v3/pkg/mock/mockstore [no test files]
? go.etcd.io/etcd/v3/pkg/mock/mockwait [no test files]
ok go.etcd.io/etcd/v3/pkg/netutil 1.024s
ok go.etcd.io/etcd/v3/pkg/osutil 0.021s
ok go.etcd.io/etcd/v3/pkg/pathutil 0.008s
ok go.etcd.io/etcd/v3/pkg/pbutil 0.008s
ok go.etcd.io/etcd/v3/pkg/proxy 4.081s
ok go.etcd.io/etcd/v3/pkg/report 0.008s
? go.etcd.io/etcd/v3/pkg/runtime [no test files]
ok go.etcd.io/etcd/v3/pkg/schedule 0.009s
ok go.etcd.io/etcd/v3/pkg/srv 0.019s
ok go.etcd.io/etcd/v3/pkg/stringutil 0.008s
? go.etcd.io/etcd/v3/pkg/systemd [no test files]
ok go.etcd.io/etcd/v3/pkg/testutil 0.023s
ok go.etcd.io/etcd/v3/pkg/tlsutil 3.965s
ok go.etcd.io/etcd/v3/pkg/traceutil 0.034s
ok go.etcd.io/etcd/v3/pkg/transport 0.532s
ok go.etcd.io/etcd/v3/pkg/types 0.028s
ok go.etcd.io/etcd/v3/pkg/wait 0.023s
ok go.etcd.io/etcd/v3/proxy/grpcproxy 0.101s
? go.etcd.io/etcd/v3/proxy/grpcproxy/adapter [no test files]
? go.etcd.io/etcd/v3/proxy/grpcproxy/cache [no test files]
ok go.etcd.io/etcd/v3/proxy/httpproxy 0.044s
ok go.etcd.io/etcd/v3/proxy/tcpproxy 0.047s
ok go.etcd.io/etcd/v3/raft 0.312s
ok go.etcd.io/etcd/v3/raft/confchange 0.183s
ok go.etcd.io/etcd/v3/raft/quorum 0.316s
ok go.etcd.io/etcd/v3/raft/raftpb 0.024s
ok go.etcd.io/etcd/v3/raft/rafttest 0.640s
ok go.etcd.io/etcd/v3/raft/tracker 0.026s
ok go.etcd.io/etcd/v3/tests/e2e 0.077s
? go.etcd.io/etcd/v3/tools/benchmark [no test files]
? go.etcd.io/etcd/v3/tools/benchmark/cmd [no test files]
? go.etcd.io/etcd/v3/tools/etcd-dump-db [no test files]
ok go.etcd.io/etcd/v3/tools/etcd-dump-logs 0.088s
? go.etcd.io/etcd/v3/tools/etcd-dump-metrics [no test files]
? go.etcd.io/etcd/v3/tools/local-tester/bridge [no test files]
? go.etcd.io/etcd/v3/version [no test files]
ok go.etcd.io/etcd/v3/wal 1.517s
? go.etcd.io/etcd/v3/wal/walpb [no test files]
go test --short ./... --count=1 76.12s user 12.57s system 375% cpu 23.635 total
```
