Add uninstall shim apex logic to InstallUtilsHost

This is a partial cherry-pick of the change
Id877ccaa5ca0030056a9bd0915a3419c0b18d6a8

Test: atest sdkextensions_e2e_tests
Change-Id: I31e2e673f5dc2f4820d12348f8c0264279c2d0c8
Merged-In: Id877ccaa5ca0030056a9bd0915a3419c0b18d6a8
(cherry picked from commit 6e23bc5d0f20f4ff5fcd29234efd7f704ed6a168)
2 files changed