aapt2 flag for target manifest package override

This change adds an aapt2 flag, rename-instrumentation-target-package,
when an android test's instrumention target module's manifest package
name is overridden.

Bug: 122957760
Test: app_test.go, atest DocumentsUITests
Change-Id: I7116a51ec5ec9d61a20cd28509b3af0e383730d7