Fix CdmTest for devices w/o relevant feature

Fix the crash in @After method on devices that do not have
FEATURE_COMPANION_DEVICE_SETUP.
Move package name of the test app and the location of its apk file to a
property.

Bug: 196226722
Test: atest CompanionDeviceManagerTest
Change-Id: Iba1e72ee2db721978f67a3674dcbf13abb39b456
(cherry picked from commit bf1cdea3f5db946baf61405be4230000551d7232)
1 file changed