Only run ConnectivityDiagnosticsManagerTest as AppModeFull. am: 7c9d2128de am: 286a433d78 am: 7cd874fe2b am: 784a0b55cf

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/11904000

Change-Id: Icb4ad50997ab906a484b58e4f1b91df2ebd6c729
tree: a61333d187c18b661038ac9f35211645248ca373
  1. tests/