Use tarballs in requirements.txt

Because using repositories breaks tests in tuskar-ui-extras and is generally
discouraged.

Also, remove empty lines from between imports, becase now tuskarclient is
and external project according to pep8.

Change-Id: I54c7ea994bc0e4167dab00af9be503c9f3e3dc06

requirements.txt

@@ -25,5 +25,4 @@ pytz
 lockfile>=0.8
 
 python-ironicclient>=0.2.1
-#http://tarballs.openstack.org/python-tuskarclient/python-tuskarclient-master.tar.gz#egg=python-tuskarclient
--e git+http://git.openstack.org/cgit/openstack/python-tuskarclient/#egg=python-tuskarclient
+http://tarballs.openstack.org/python-tuskarclient/python-tuskarclient-master.tar.gz#egg=python-tuskarclient

tuskar_ui/api/tuskar.py

@@ -21,7 +21,6 @@ from openstack_dashboard.api import base
 from openstack_dashboard.api import glance
 from openstack_dashboard.api import neutron
 from os_cloud_config import keystone_pki
-
 from tuskarclient import client as tuskar_client
 
 from tuskar_ui.api import flavor

tuskar_ui/exceptions.py

@@ -12,7 +12,6 @@
 #    under the License.
 
 from openstack_dashboard import exceptions
-
 from tuskarclient.openstack.common.apiclient import exceptions as tuskarclient
 
 NOT_FOUND = exceptions.NOT_FOUND

tuskar_ui/test/test_data/exceptions.py

@@ -12,7 +12,6 @@
 #    under the License.
 
 from openstack_dashboard.test.test_data import exceptions
-
 from tuskarclient.openstack.common.apiclient import exceptions as tuskarclient
 
 

tuskar_ui/test/test_data/tuskar_data.py

@@ -11,7 +11,6 @@
 #    under the License.
 
 from openstack_dashboard.test.test_data import utils as test_data_utils
-
 from tuskarclient.v2 import plans
 from tuskarclient.v2 import roles