UPSTREAM: <carry>: scripts/test_lib.sh: skip go get if readonly

Signed-off-by: Sam Batschelet <sbatsche@redhat.com>

build.sh

@@ -9,6 +9,8 @@ fi
 
 VERSION_SYMBOL="${ROOT_MODULE}/api/v3/version.GitSHA"
 
+GO_BUILD_FLAGS="${GO_BUILD_FLAGS} ${GOFLAGS:+-$GOFLAGS}"
+
 # Set GO_LDFLAGS="-s" for building without symbols for debugging.
 # shellcheck disable=SC2206
 GO_LDFLAGS=(${GO_LDFLAGS} "-X=${VERSION_SYMBOL}=${GIT_SHA}")

scripts/test_lib.sh

@@ -302,7 +302,7 @@ function tool_exists {
 }
 
 # Ensure gobin is available, as it runs majority of the tools
-if ! command -v "gobin" >/dev/null; then
+if ! command -v "gobin" >/dev/null && [[ ! "$GO_BUILD_FLAGS" =~ 'mod=readonly' ]]; then
     run env GO111MODULE=off go get github.com/myitcv/gobin || exit 1
 fi