enable to run xplat tests in ci
Merge pull request #1306 from yugangw-msft/runxplat

enable to run xplat tests in ci
Generated the graph.rbac client with latest spech changes and made it ready to publish under azure-extra module
modified the gruntfile and jshintignore
Merge pull request #1307 from amarzavery/dev

Generated the graph.rbac client with latest spech changes and made it re...
edited readme.md of azure-extra
Merge pull request #1308 from amarzavery/dev

edited readme.md of azure-extra