* Turn off checking of format of commit message.
* scripts/fix.sh: Fix fixing whitespaces in *.sh scripts
Aparently there is a difference between:
find ./ -print0 -name *.sh and
find ./ -name *.sh -print0
* etcdserver unit tests: Do not call .Fatalf(...) from not test's goroutine.
Fixes following test failures:
https://travis-ci.com/github/etcd-io/etcd/jobs/425920416
```
% (cd server && go vet ./...)
stderr: # go.etcd.io/etcd/server/v3/etcdserver
stderr: etcdserver/server_test.go:1002:4: call to (*T).Fatalf from a non-test goroutine
stderr: etcdserver/server_test.go:1166:4: call to (*T).Fatalf from a non-test goroutine
FAIL: (code:2):
% (cd server && go vet ./...)
FAIL: 'run go vet ./...' checking failed (!=0 return code)
FAIL: 'govet' failed at Tue Nov 3 04:07:47 UTC 2020
```
We make v2 client code a module go.etcd.io/etcd/client/v2.
Pretty mechanical change that can be summarized as:
mkdir client/v2
cd client/v2 && git mod init go.etcd.io/etcd/client/v2
git mv client/*.go client/v2/
find -name '*.go' | xargs sed -i --follow-symlinks 's|/v3/client["]|/client/v2\"|g'
+ fixing changelog, bom, go.mod etc.
Replace ./scripts/install_tool.sh with `gobin`, such that we have
consistent handling for all tools needed for build and consistent
versioning within ./tools/mod/go.mod.
Side changes:
- Expose /scripts/fix.sh that fixes formatting and bom across modules
- Expose *.sh variants of scripts like build and ./test (first step
towards replacement).
- Make stderr output of commands explicit and make commands use
different color than callouts.
