Added test for the bug 1184594

1. Added test to verify that resize of a user's server
by an admin doesn't check for admin quota but checks
for user quota instead.

2. Fixing pep8 issues in test_resize_server_confirm.py

Change-Id: If451636223d7daf5b88fc13fbff8681c6b782539
Merge "Added test for the bug 1184594"