Catch up RPC context fixes on NEC OpenFlow plugin

Fixes bug 1099179

Change-Id: Ib61081c3aaed8770906dd57874c45358b0418c3f
Update latest OSLO.

Changes include:
1. Removing the 'extras' in the pip-requires
2. Fixes for fake implementations for RPC calls
3. Version updates due to common version update

Change-Id: Iefd32b3f7d529943b078e6d927d06043286ff94e
NEC OpenFlow plugin supports L3 agent RPC

Fixes bug 1099879

Change-Id: Icbe1d686fea2f821e55c4a25916361dbfe9ad380
Merge "Update latest OSLO."
Merge "Catch up RPC context fixes on NEC OpenFlow plugin"
Merge "NEC OpenFlow plugin supports L3 agent RPC"
Fixes import order nits

Change-Id: Ide6dff579a126c9af5b593f9ce541873a7643415