Add console commands

Adds:
* console-log
* console-url

Part of blueprint nova-client

Change-Id: Ibea7f96382283770988d05379d41a148f8cd8c4f
Merge branch 'tweak-volume' into dt-test
Merge branch 'volume-keystone' into dt-test
Merge branch 'compute-keypair' into dt-test
Merge branch 'console-commands' into dt-test