keystoneauth1: enable tests

requires a later version of betamax, bumped to 0.8.0

(cherry picked from commit 97644a9f4f160e4a5eba77e462701f516a46b5ad)

pkgs/development/python-modules/keystoneauth1/default.nix

···
 , pbr, testtools, testresources, testrepository, mock
 , pep8, fixtures, mox3, requests-mock
 , iso8601, requests, six, stevedore, webob, oslo-config
+, pyyaml, betamax, oauthlib
 }:
 
 buildPythonPackage rec {
···
     sha256 = "0rg3harfyvai34lrjiqnl1crmvswjvj8nsviasnz4b9pcvp3d03n";
   };
 
-  buildInputs = [ pbr testtools testresources testrepository mock
-                  pep8 fixtures mox3 requests-mock ];
+  buildInputs = [ pbr  ];
+  checkInputs = [ pyyaml betamax oauthlib testtools testresources
+                  testrepository mock pep8 fixtures mox3 requests-mock ];
   propagatedBuildInputs = [ iso8601 requests six stevedore webob ];
 
-  # oslo_config is required but would create a circular dependency
-  doCheck = false;
+  doCheck = true;
+  # 1. oslo-config
+  # 2. oslo-utils
+  # 3. requests-kerberos
+  preCheck = ''
+    rm keystoneauth1/tests/unit/loading/test_{session,conf,adapter}.py
+    rm keystoneauth1/tests/unit/access/test_v{2,3}_access.py
+    rm keystoneauth1/tests/unit/extras/kerberos/test_fedkerb_loading.py
+  '';
   postPatch = ''
     sed -i 's@python@${python.interpreter}@' .testr.conf
     substituteInPlace requirements.txt --replace "argparse" ""

pkgs/top-level/python-packages.nix

···
   };
 
   betamax = buildPythonPackage rec {
-    name = "betamax-0.6.0";
+    name = "betamax-0.8.0";
 
     src = pkgs.fetchurl {
       url = "mirror://pypi/b/betamax/${name}.tar.gz";
-      sha256 = "0vw4d53jbbb2kdl7l891h8iyxklqcd6ldvgcyhw9hl40ljdhv1wz";
+      sha256 = "18f8v5gng3j773jlbbzx4rg1i4y2zw3m2l1zpmbvp8bh5a2q1i42";
     };
 
     propagatedBuildInputs = [ self.requests ];