Fixed sahara cluster details page

"| safe" is not required for info data from Sahara.

Change-Id: I6454cef1dc17f20d4e74daeba0525b431d195422
Closes-Bug: #1379642
Clean up test output

Some of the API calls weren't mocked properly. Add the missing mocks so
the test output is again clean.

Change-Id: I83fff8ee3f63e79ef5786602d6516703a22f0702
Partial-bug: #1378907
Merge "Clean up test output"
Merge "Fixed sahara cluster details page"
Merge branch 'master' of https://github.com/openstack/horizon