Each workload has be modfied to remove the old manual paremeter conversion
and instead to retrieve the desired type from the parameter bundle directly.
The stock camera app as of Android M has changed. This commit updates
the ui automation to work with this new app. As part of this change
it was required to bump the API level of the ui automation to 18.
Also made the teardown of the capture workload close the app like the
record workload.
