p2p: add unit tests for WifiP2pServiceImpl

This CL add unit tests for below functions:
- Request Ongoing Peer Config
- Request Persistent Group Info
- Request Connection Info
- Request P2p State
- Request Discovery State
- Request Network Info
- Remove Local Service
- Clear Local Services
- Add Service Request
- Remove Service Request
- Clear Service Requests

Bug: 122928483
Test: ./frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: I9579d00b8913b4d6a8d659e41cc6011fccff9cfe
Merged-In: I9579d00b8913b4d6a8d659e41cc6011fccff9cfe
1 file changed