Wildcard out the expected json body

This is because android builds the json document in a different order
due to different underlying map implementations.
Merge branch 'run_tests_on_android' of github.com:cloudant/sync-android into run_tests_on_android
Merge branch 'run_tests_on_android' of github.com:cloudant/sync-android into run_tests_on_android
Merge branch 'run_tests_on_android' of github.com:cloudant/sync-android into run_tests_on_android