renaming swauth tools to gswauth

cli tools for account and user mgmt have been renamed
from swauth-* to gswauth-*

Updated other configuration and test files accordingly

Change-Id: Iced3bb27fbd09da45754ddb264f8fb4528ab423c
Signed-off-by: Thiago da Silva <thiago@redhat.com>
Reviewed-on: http://review.gluster.org/6417
Reviewed-by: pushpesh sharma <psharma@redhat.com>
Tested-by: pushpesh sharma <psharma@redhat.com>
Reviewed-by: Shilpa MJ <smanjara@redhat.com>
Tested-by: Shilpa MJ <smanjara@redhat.com>
Reviewed-by: Luis Pabon <lpabon@redhat.com>