[sdks/android] Include vcsTag when uploading to bintray.

.taskcluster.yml

@@ -70,7 +70,7 @@ tasks:
           && python automation/taskcluster/release/fetch-bintray-api-key.py
           && cd sdks/android/Mentat
           && ./gradlew --no-daemon clean library:assembleRelease
-          && ./gradlew bintrayUpload --debug
+          && ./gradlew bintrayUpload --debug -PvcsTag={{ event.head.sha }}
       features:
         taskclusterProxy: true
     metadata:

sdks/android/Mentat/publish.gradle

@@ -91,6 +91,9 @@ ext.configurePublish = { groupIdArg, artifactIdArg, descriptionArg ->
             desc = descriptionArg
             websiteUrl = libUrl
             vcsUrl = libVcsUrl
+            if (project.ext.has('vcsTag')) {
+                vcsTag = project.ext.vcsTag
+            }
             licenses = [libLicense]
             publish = true
             publicDownloadNumbers = true