Fixes test setup to uninstall the correct test app Prior to this change, the setup step for the atomic install cts tests would uninstall the wrong packages and then use common packages used in other install test cases. If there was a failure to clean up those apps in one of the other tests, this test case would be unable to uninstall due to the orphaned state of the apps. Fixes: 138883691 Test: atest AtomicInstallTests Change-Id: I1cf50f7be6acb85a7cad5bac03b13982602f8417