Handle the missing of service catalog after token validation.
Fixed an error caused by a missing key in address.
Supported specification of region in config file.
Specified a specific network ID when booting a VM.

This commit fixed a 400 error after the upgrade of SAVI Testbed.
Fix hardcoded tenant name for job binaries.
Merge pull request #1 from hongbin/stable/icehouse

Stable/icehouse