upload csiproxy binary to gcs with version information

add logic to upload binary to gcs with version information

Author: jingxu97

.cloudbuild.sh

@@ -5,5 +5,4 @@
 # Extract tag-n-hash value from GIT_TAG (form vYYYYMMDD-tag-n-hash) for REV value.
 REV=v$(echo "$GIT_TAG" | cut -f3- -d 'v')
 
-run_with_go "${CSI_PROW_GO_VERSION_BUILD}" make build REV="${REV}"
-cp bin/csi-proxy.exe bin/csi-proxy-"${PULL_BASE_REF}".exe
+run_with_go "${CSI_PROW_GO_VERSION_BUILD}" make build REV=${REV}

cloudbuild.yaml

@@ -11,7 +11,7 @@ steps:
   # the desired version of Go (currently defined in release-tools/travis.yml),
   # but that just speeds up the build and is not required.
   - name: 'gcr.io/k8s-testimages/gcb-docker-gcloud:v20200421-a2bf5f8'
-    entrypoint: bash
+    entrypoint: bash 
     env:
     - GIT_TAG=${_GIT_TAG}
     - PULL_BASE_REF=${_PULL_BASE_REF}
@@ -21,12 +21,12 @@ steps:
 substitutions:
   # _GIT_TAG will be filled with a git-based tag for the image, of the form vYYYYMMDD-hash, and
   # can be used as a substitution
-  _GIT_TAG: '12345'
+#  _GIT_TAG: '12345'
   # _PULL_BASE_REF will contain the ref that was pushed to trigger this build -
   # a branch like 'master' or 'release-0.2', or a tag like 'v0.2'.
-  _PULL_BASE_REF: 'master'
+#  _PULL_BASE_REF: 'master'
 artifacts:
   objects:
-    location: 'gs://k8s-staging-sig-storage/csi-proxy'
-    paths: 'bin/csi-proxy-${_PULL_BASE_REF}.exe'
+    location: 'gs://k8s-staging-sig-storage/csi-proxy/${_PULL_BASE_REF}'
+    paths: 'bin/csi-proxy.exe'