Clean golang test cache before each arm64 ci test suite.

Signed-off-by: James Blair <mail@jamesblair.net>

.github/workflows/e2e-arm64.yaml

@@ -33,6 +33,7 @@ jobs:
           TARGET: ${{ matrix.target }}
         run: |
           set -euo pipefail
+          go clean -testcache
 
           echo "${TARGET}"
           case "${TARGET}" in

.github/workflows/robustness-template-arm64.yaml

@@ -45,6 +45,7 @@ jobs:
           ETCD_BRANCH: "${{ inputs.etcdBranch }}"
         run: |
           set -euo pipefail
+          go clean -testcache
 
           # Use --failfast to avoid overriding report generated by failed test
           GO_TEST_FLAGS="-v --count ${{ inputs.count }} --timeout ${{ inputs.testTimeout }} --failfast --run TestRobustness"

.github/workflows/tests-arm64.yaml

@@ -36,6 +36,7 @@ jobs:
           TARGET: ${{ matrix.target }}
         run: |
           set -euo pipefail
+          go clean -testcache
 
           mkdir "${TARGET}"
           export JUNIT_REPORT_DIR=$(realpath ${TARGET})