Partial revert of "Remove ConnectivityServiceTest signature perms use"

This reverts the Android.bp changes in commit
bba8ec0d43ff4c9219f259bdfe1cc4f05faa609b.

Reason for revert: This broke ConnectivityServiceTest (https://android-build.googleplex.com/builds/tests/view?invocationId=I90700009364410436&testResultId=TR01525128446370769)

A full revert has a merge conflict in the other file, and is likely
not necessary to fix the failure.

Change-Id: Icc0c2500590a6b936016574be4f234b9f748cb80
1 file changed