[Gerrit] Adding a new label - 'Workflow'

* label 'Workflow' is required by Zuul for launching gate pipeline
 * Zuul should be able to vote Verified +2 as a response to successful
   gate pipeline (extending Verified label by -2..+2)
 * The change requires merging https://review.fuel-infra.org/#/c/22331/

Change-Id: Ie0ec110f09edf0069b6754f123e66f9532cfd937

murano-apps/Gerrit/package/Classes/Gerrit.yaml

@@ -196,13 +196,13 @@ Methods:
           name       => $name))
       - $.instance.agent.call($template, $resources)
 
-  createLabelVerified:
+  createLabels:
     Body:
       - $._environment.reporter.report($this, 'Creating label "Verified" in Gerrit...')
       - $linux: new(conf:Linux)
       - $resource: new(sys:Resources)
 
-      - $script: $resource.string('create_verified.sh')
+      - $script: $resource.string('create_gerrit_labels.sh')
       - $linux.runCommand($.instance.agent, $script)
       - $._environment.reporter.report($this, 'Label "Verified" is successfully created.')
 

murano-apps/Gerrit/package/Resources/create_gerrit_labels.sh

@@ -25,10 +25,18 @@ fi
 
 cat >> project.config << CONFIG
 [label "Verified"]
-       function = MaxWithBlock
-       value = -1 Fails
-       value =  0 No score
-       value = +1 Verified
+        function = MaxWithBlock
+        value = -2 Fails
+        value = -1 Doesn't seem to work
+        value = 0 No score
+        value = +1 Works for me
+        value = +2 Verified
+[label "Workflow"]
+        function = MaxWithBlock
+        value = -1 Work in progress
+        value = 0 Ready for reviews
+        value = +1 Approved
+
 CONFIG
 
 git commit -am "Adding label 'Verified' to All-projects"

murano-apps/Jenkins/package/Classes/Jenkins.yaml

@@ -99,7 +99,7 @@ Methods:
               - $._environment.reporter.report($this, 'Creating "jenkins" account in Gerrit...')
               - $.createGerritAccount()
               - $.configureGerritPlugin()
-              - $.gerrit.createLabelVerified()
+              - $.gerrit.createLabels()
               - $._upgradeGitPlugin()
 
           - $.configureUser()