Revert "Adding multi_tenancy default values in config.global.js."

This reverts commit 7d3c9090e541a35b640b577f7432d7a512d1c0e6

multi_tenancy needs to be true for openstack. Reverting the changes made to the template file.
Related-Bug: #1390392

While polling vCenter task status to know whether completed or not,
Currently it only checks for success status and if not it will continue
polling.
Added check to see if task status is "error" and if yes, stop polling task
status and retrun error to handler

Change-Id: I5aba5e5ac8302a788bc12f66dd151e42ffa7e8be
Merge "Revert "Adding multi_tenancy default values in config.global.js.""
Merge "Related-Bug: #1390392"
Merge pull request #72 from Juniper/master

Pull changes from Juniper/web-core to absingla/web-core