[automerger skipped] Add CTS for getAllNetworkStateSnapshots am: cfefdea403 am: ccebee1ece -s ours am: 92333ed77f -s ours

am skip reason: Merged-In I573b009bd05bbc0c855aaa6e20cb8ebde6729936 with SHA-1 3a64e80dee is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1708091

Change-Id: I34369597d0ff01d30bd9a4d302b103888d919423