Adopt shell permissions identify for running the 1P/3P pip tests

This also requires updating the MOCK_LOCATION permission to shell
process, as it is now recognized as that instead of the test package.

Bug: 302034872
Test: manually, modified Android.bp java_defaults by removing
certificate signing, make csuite and run -> fail due to permissions
Added the changes made in this CL still without the certificate signing
make csuite and run -> tests run successfully, even though the apk is
not signed with platform certificate

Change-Id: I324cc94bd53d333afa7ec3aef0cb7e46c72b0a3b