Bump the base rpc version of the network api to 1.7.

Change I2627e8b0f45c5c39bbbf1a4a12b448e1992fa4b4
bumped the RPC version of the API to 1.7
but did not bump the RPC version in the network
manager.

Change-Id: I1c719a1458ef5892e90aabee92a8b5e93cfa11c8
Merge "Bump the base rpc version of the network api to 1.7."