Ensure that nova client prints dictionaries and arrays correctly

Print the dictionaries and arrays without the unicode tags.

The patch also updated tests that did not return valid data.

Change-Id: Ia787f98a9510b68beb3ceaf00c285ca5c934f5c0
Closes-bug: #1265002
Support list deleted servers for admin

Nova api supported a parameter named 'deleted' which allow Admin to list
deleted servers. This patch make novaclient support this.

Change-Id: Ifc492fd0ba9d885e37c04c165d6397832ae6ebe0
Closes-Bug: #1266631
Merge "Support list deleted servers for admin"
Merge "Ensure that nova client prints dictionaries and arrays correctly"