Add missing dependent module gettextutils

gettextutils was used in novaclient, but wasn't recorded.
This patch also let the modules in alphabetical order.

Change-Id: I725c3e8be126b8acd5e42ccaca776f57235ecdc7
Convert agent testing to httpretty

Change-Id: Ifd598c3b2d4c26b3557349046822a8ab2108aca7
blueprint: httpretty-testing
Convert Availability Zone testing to httpretty

Change-Id: I1de0a1f488f1a59d9041a2788762ddf8361a6b41
blueprint: httpretty-testing
Merge "Add missing dependent module gettextutils"
Merge "Convert Availability Zone testing to httpretty"