Add expected response checks of secgroup rules

"add security group rule" API returns additional rule in its response
body but current tests don't check the response.
This patch adds some checks of the response.
In addition, this patch removes status code checks because the codes
are already checked in client side.

Change-Id: Iab4ce492c060b8a2b79a3b3d9a6d30a359f6f312
Related-Bug: #1373832
Fix duplicate ref of volume_types_client in vol tests

tempest/api/volume/base.py admin base tests class has duplicate
reference for 'volume_types_client'. Tests use mix of both.

This patch fix this duplicate reference and modify tests accordingly

Closes-Bug: #1379106

Change-Id: I016d364ad792c97d1dce12ee7da225ebe0a690f6
Add a server console-log test with unlimited length

Now server console-log API is important for debugging gate problems
and the API is called with unlimited length for debugging. However,
there is not the API test with unlimited length.
This patch adds the test.

Change-Id: I5a35f086deddfcd54e995cb1156699592d1daea6
Merge "Add expected response checks of secgroup rules"
Merge "Add a server console-log test with unlimited length"
Merge "Fix duplicate ref of volume_types_client in vol tests"