Modified Keystone Commands
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Keystone API has been changed from v2 to v3 and some
of the conventional options like --user-id have been
changed to --user, please check the changelog or the
help/man page of Keystone for more information.

Well this commit updates the keystone commands to work
with v3 API. They run fine for me. Please do tell me if
there are some mistakes or If I am totally wrong about it.
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regards,
Pranav Salunke
pps.pranav@gmail.com