c0e20dbf2e test: add coverage for ServiceFlags::P2P_V2 (Bruno Garcia)
Pull request description:
Include `P2P_V2` on `service_flags_test`
ACKs for top commit:
tcharding:
ACK c0e20dbf2e
apoelstra:
ACK c0e20dbf2e1406a3f3df5538d1397b233078cd7c; successfully ran local tests
Tree-SHA512: 6ebb2f493bcc8fc6643cec67945a81692f03ceb976d75e10ce6052e775901846b9795f31817439b4484ef2d1eaae122d7da270cac2b59d7bb41cb2015593d1f5