Change the token verb to issue/revoke as documented in:

https://wiki.openstack.org/wiki/OpenStackClient/Commands#token
https://wiki.openstack.org/wiki/OpenStackClient/Commands#Actions

Change-Id: I44f77f98ad3269c4f2149301c204804dcb75ac81

The keystoneclient code for oauth1 support has changed.
As such, we should remove the delete, list and authenticate
functions, since they are not in keystoneclient.

Also, we must now pass in the project id when creating a
request token. Additionally we must now pass in roles
when authorizing a request token.

Added functional tests to ensure output and input args
are the same.

bp add-oauth-support
Change-Id: I559c18a73ad95a0c8b7a6a95f463b78334186f61

There are files containing string format arguments inside
logging messages. Using logging function parameters should
be preferred.

Change-Id: Ic749ac9eb55564ed631d57055a5a4dfc3aebd169

This fixes some errors and inconsistencies I found reviewing the
help strings:
* Capitalize help strings
* Add missing space between words (in multi-line strings)
* Improve wording

Change-Id: I2fb31ab4191c330146e31c1a9651115a6657769a

Implements token create subcommand which is an equivalent of keystone
token-get command. Original "wrap" parameter for keystone token-get is
not implemented yet due to cliff Bug #1269299

This is a part of: blueprint add-identity-token-support

Change-Id: I2255021c9d1f10f757686583b1ebe40b5f3a9ecb

1) split out token and consumer
2) sync parameters with keystoneclient

Change-Id: I2d529f0f9087f9939101e963af3d801497fc1171