Migrate StagedInstallTest to cts.install.lib

Migrate CtsStagedInstallHostTestCases to cts.install.lib.
Also migrate ApexShimValidationTest.
Reuse test apks from cts.install.lib.

Test: atest CtsStagedInstallHostTestSases
Bug: 134653708
Fixes: 135182067
Change-Id: I22e5f1ab1da29c0d1dcee5fe488bff0bec548840
Merged-In: I18de81165a9761fe18687e22a171bbd55447aa5a
12 files changed