Multiple changes in 'gluster-swift-gen-builder'

script now does some validation on accountnames and does not put forward
anything on screen unless asked verbose, '-v'. Help text is also added
and can be used with '-h' option.

Bug: 1001033

https://bugzilla.redhat.com/show_bug.cgi?id=1001033

Change-Id: I26af27fc96c1b1b0b84319d8b8453dfa075a8c55
Signed-off-by: Chetan Risbud <crisbud@redhat.com>
Reviewed-on: http://review.gluster.org/6121
Reviewed-by: Luis Pabon <lpabon@redhat.com>
Tested-by: Luis Pabon <lpabon@redhat.com>
Reviewed-on: http://review.gluster.org/6310
fix error with swauth-clean-tokens

Error is caused by left-over code from swauth. It had hard-coded
the auth account to .auth. Changed code to use volume specified
in the config file

Change-Id: Id00eb3964b6b26a84511e4753ab80b2dea5654da
Signed-off-by: Thiago da Silva <thiago@redhat.com>
Reviewed-on: http://review.gluster.org/6280
Reviewed-by: Luis Pabon <lpabon@redhat.com>
Tested-by: Luis Pabon <lpabon@redhat.com>
Reviewed-on: http://review.gluster.org/6312