add new yaml to connect to artifactory from npm

npm-packages/artifactory_connect.yml

+default:
+  before_script:
+    #set root user
+    - npm -g config set user root
+    # install jfrog cli. Use cache on .npm folder
+    - npm install -g jfrog-cli-go --cache .npm --prefer-offline
+    # load artifactory config from base64 encoded string
+    - jfrog config import $ARTIFACTORY_CI_CONFIGURATION
+    # set server id
+    - jfrog rt use $ACR_SERVER_ID