In newer versions of adb, files cannot be installed unless they use the
`.apk` extension therefore we need to be able to distinguish between
regular apks and instrumented test files.
Uiautomator1 has been deprecated, therefore the uiautomation base classes have
been upgraded to use uiautomator2 and the new gradle build system.
Altered to retrieve `package_name` rather than `package` as per the previous commit.
When moving to Uiautomation 2, tests are now complied into apk files rather than
jar files. To avoid conflicts with regular workload apks a new resource type is
added to retrieve the test files which will be renamed to have the extension
.uiautoapk
- Check the APK's versionName property against the workload's
expected version if specified
- If workload specifies check_abi param, try to get APK from
ABI-specific path on the host
- Add variant_name param to APK resource-getter for backwards
compatibility of dex2oat and peacekeeper
