Refactored Neutron tempest plugin directory structure

* switch from neutron.tests.tempest to neutron_tempest_plugin
* Cleaned up README.rst and setup.cfg
* Use neutron_tempest_plugin as a tempest plugin package
* Fixed gitreview
* Keeping flake8 Ignores in tox.ini as tempest plugin is
  imported from neutron codebase.

Change-Id: I42d389836e72813fdeebc797a577f4a8ac2ee603
diff --git a/setup.cfg b/setup.cfg
index 2fb5c94..b0b7405 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
-name = openstack
-summary = Tempest plugin neutron_tempest_plugin
+name = neutron_tempest_plugin
+summary = Tempest plugin for Neutron Project
 description-file =
     README.rst
 author = OpenStack
@@ -21,7 +21,7 @@
 
 [files]
 packages =
-    neutron
+    neutron_tempest_plugin
 
 [build_sphinx]
 all-files = 1
@@ -37,15 +37,15 @@
 domain = neutron
 
 [update_catalog]
-domain = neutron
-output_dir = neutron/locale
-input_file = neutron/locale/neutron_tempest_plugin.pot
+domain = neutron_tempest_plugin
+output_dir = neutron_tempest_plugin/locale
+input_file = neutron_tempest_plugin/locale/neutron_tempest_plugin.pot
 
 [extract_messages]
 keywords = _ gettext ngettext l_ lazy_gettext
 mapping_file = babel.cfg
-output_file = neutron/locale/neutron_tempest_plugin.pot
+output_file = neutron_tempest_plugin/locale/neutron_tempest_plugin.pot
 
 [entry_points]
 tempest.test_plugins =
-    neutron_tests = neutron.tests.tempest.plugin:NeutronTempestPlugin
+    neutron_tests = neutron_tempest_plugin.plugin:NeutronTempestPlugin