Fix requirements and tests for python-fuelclient 8.0

* bump pbr version to >=1.6 as it is in global-requirements
* uncomment extras section in setup.cfg as new pbr can handle it now
* turn off "newly" introduced fuzzy command suggestions in cliff for
  tests

Change-Id: I161813b7e25719b6bb19909adfc2d094c5c480ce

octane/tests/conftest.py

@@ -28,6 +28,10 @@ class SafeOctaneApp(app.OctaneApp):
         parser.set_defaults(debug=True)
         return parser
 
+    def get_fuzzy_matches(self, cmd):
+        # Turn off guessing, we need exact failures in tests
+        return []
+
     def run(self, argv):
         try:
             exit_code = super(SafeOctaneApp, self).run(argv)

requirements.txt

@@ -1,7 +1,7 @@
 # NOTE: These requirements *must* match those of libs installed on Fuel master
 # To verify them, use command like "rpm -q --whatrequires python-cliff" and
 # examine requirements of software listed there.
-pbr>=0.6,!=0.7,<1.0
+pbr>=1.6
 
 python-fuelclient  # It pulls following libs:
 #cliff

setup.cfg

@@ -23,11 +23,9 @@ classifier =
 packages =
     octane
 
-# NOTE(akscram): The extras section properly handled in pbr>=1.0.0 and
-#                represents the extras_require parameter.
-# [extras]
-# zabbix =
-#     pyzabbix==0.7.3
+[extras]
+zabbix =
+    pyzabbix==0.7.3
 
 [entry_points]
 console_scripts =