to only run them when com.google.android.tethering is
installed on device. This does not change any existing CTS run.
The logic only applies when the test triggered by mts-tradefed
to make sure it runs appropriate set of tests against the device.
For example, the test will be skipped when running MTS on Q because
tethering and wifi are not on Q devices.
Bug: 154845935
Test: m mts && mts-tradefed run mts-tethering
Change-Id: I9e6bd60982d4ef67538ad506e7008366bbf35363