Imported Translations from Transifex

Change-Id: Icab01b8cdebf05b9d49f7ec3e619e1f9652aeffb
Use 400 instead of 422 for security_groups v2 API

For any invalid request format we should return 400, not 422,
this patch fixes this case for v2 security_groups API.

This patch follows the rule:
https://wiki.openstack.org/wiki/APIChangeGuidelines

Change-Id: I78f523901918901e55b339d0cbd9cc78dd52044f
Closes-Bug: #1380456
Updated from global requirements

Change-Id: I0143a9659a2dafaacf687f117b77a627e468a106
Merge "Imported Translations from Transifex"
Merge "Use 400 instead of 422 for security_groups v2 API"
Merge "Updated from global requirements"
Merge commit 'refs/changes/41/127941/2' of git://gold.eng.hq.xensource.com/git/github/openstack/nova into tmpbranch