Add T111 hacking rule for consistent DELETE method

As the consistent-service-method-names bp, "DELETE /resources/<id>"
methods' names should be "delete_<resource name>".
So this patch adds it as the hacking rule.

Partially implements blueprint consistent-service-method-names

Change-Id: I36592a91001361d816e302745fe8417aee5e7565
14 files changed