Merge branch 'helm-release-conditional' into 'master'

[ci] skip release:helm if PUSH_REPO is nil

See merge request nvidia/kubernetes/gpu-operator!233

Author: shivamerla

.common-ci.yml

@@ -29,8 +29,6 @@ versioning:
     - if [ -z "${CI_COMMIT_TAG}" ]; then echo SUBCHART_DIR="nightly" ; else echo SUBCHART_DIR="stable"; fi | tee -a .VERSION_INFO
     # check that index is not dirty - to avoid some annoying to debug CI failures
     - "git diff-index --quiet HEAD -- || ( echo ERROR: Unstaged files or dirty index ; exit 1 )"
-    # check version data and that it follows SemVer 2.0 format
-    - echo "${VERSION}" | grep -qe '^[0-9]\+\.[0-9]\+\.[0-9]\+\(-[^+]\+\)\?\(+.*\)\?$'
   artifacts:
     paths:
       - .VERSION_INFO

.nvidia-ci.yml

@@ -137,6 +137,8 @@ release:helm:
   variables:
     GIT_STRATEGY: clone
   only:
+    variables:
+      - $RELEASE_HELM == "true"
     refs:
       - master
       - /^v\d+\.\d+\.\d+$/