hack/build-go.sh: Compress cluster-version-operator-tests binary

Compress the openshift-tests extension binary. Use `--force` to overwrite
the output file if already present to speed up local development. Use `--keep`
to keep the original binary after compressing it so that a developer may use it.

Compressing because [1]:

> Statically linked binaries are prohibited in FIPS and will
> cause failures if detected by product pipeline scans. To
> avoid this, extension binaries should be gzipped before
> being committed to container images.

Such a compressed binary can be then extracted as per [1]:

> After discovering a test extension binary, the origin test framework will
> extract the binary from the container image which carries it and store it
> in /tmp storage of the pod in which it is running.
>
> If the binary-path ends in .gz, the binary will be decompressed.

[1]: https://github.com/openshift/enhancements/blob/c2c0d43e3cd70cf79bc2b101ceb6a03c5e0114a8/enhancements/testing/openshift-tests-extension.md

Author: DavidHurta

hack/build-go.sh

@@ -47,6 +47,9 @@ GO_COMPLIANCE_POLICY="exempt_all" CGO_ENABLED=0 GOOS=${GOOS} GOARCH=${GOARCH}
   -o "${BIN_PATH}/cluster-version-operator-tests"                               \
   "${REPO}/cmd/cluster-version-operator-tests/..."
 
+echo "Compressing the cluster-version-operator-tests binary"
+gzip --keep --force "${BIN_PATH}/cluster-version-operator-tests"
+
 # Build the cluster-version-operator binary
 GLDFLAGS+="-X ${REPO}/pkg/version.Raw=${VERSION_OVERRIDE}"
 echo "Building ${REPO} cluster-version-operator binary (${VERSION_OVERRIDE})"