Don't use request builtin redirect for any methods

Since Iee578ea23c842e48f2d73992804f9c2efb9c7f43 has been merged we
really don't need to use requests buggy redirect so let just do that to
have the element of less surprise.

Change-Id: Ie363edc3f21274a075f3e7363b78ece1b511d193
Improve help strings

Follow oslo.config style guide for help strings better to create
consistent help strings:
* Finish help strings with "."
* Fix capitalization in one example
* Fix wording (use "by a semicolon")

Change-Id: I402401509481ce18bac333cd6d96554d64725b57
Merge "Don't use request builtin redirect for any methods"
Merge "Improve help strings"