rpc(getpeerinfo): Add inbound peers to method response #2552

Job	Run time
Check Cargo.lock is up to date	51s
Install zebrad from lockfile without cache on ubuntu-latest	8m 39s
Test stable on ubuntu-latest	34m 42s
Test beta on ubuntu-latest	33m 54s
Check deny.toml bans	45s
Test stable on macos-latest	41m 11s
Check deny.toml bans --features default-release-binaries	45s
Test stable on windows-latest	1h 6m 16s
Check deny.toml bans --all-features	49s
Test beta on windows-latest	1h 4m 39s
Check deny.toml sources	47s
Check deny.toml sources --features default-release-binaries	46s
Check for unused dependencies	6s
Check deny.toml sources --all-features	47s
Open or update issues for OS integration failures	0s
	4h 14m 57s

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