verify_networks fixed according to changed API

Change-Id: I1a6ebc6600f30a56e9a19f9925a6de5a81fbc2eb
change type of cluster_id in run_ostf_method

Fix 500 error on invokation of run_ostf method

Change-Id: Ica8c6106a96d3b75b84f613d878fbeb4a7f1124c
added net_provider for get_networks

Change-Id: I39011ee56f6c0dab9db1279edcb999964fd4cb9d
Merge "verify_networks fixed according to changed API"
Merge "added net_provider for get_networks"
Ceph build tweaks. Do not merge.

Change-Id: If7f369078f5e1b559a2ec2aa9429f3759e037ba4