rpc(getpeerinfo): Add inbound peers to method response #2643

Job	Run time
Check Cargo.lock is up to date	1m 7s
Install zebrad from lockfile without cache on ubuntu-latest	8m 38s
Test stable on ubuntu-latest	41m 51s
Test beta on ubuntu-latest	43m 18s
Test stable on macos-latest	47m 47s
Check deny.toml bans	44s
Check for unused dependencies	15s
Test stable on windows-latest	1h 4m 16s
Check deny.toml bans --features default-release-binaries	44s
Test beta on windows-latest	1h 6m 55s
Check deny.toml bans --all-features	44s
Check deny.toml sources	47s
Check deny.toml sources --features default-release-binaries	45s
Check deny.toml sources --all-features	44s
Open or update issues for OS integration failures	0s
	4h 38m 35s

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