fixing pep8 tests for new gswauth middleware

Formatted original swauth code to pass pep8 tests.

Change-Id: I7c63a102ece44e8331137d1d5576a58588fe53e2
Signed-off-by: Thiago da Silva <thiago@redhat.com>
Reviewed-on: http://review.gluster.org/6087
Reviewed-by: Luis Pabon <lpabon@redhat.com>
Tested-by: Luis Pabon <lpabon@redhat.com>