When test case updates the wifi network from unmetered to
metered, test case will wait for wifi network reconnect.
However, if other metered networks are also connected at
the same time, test case may mis-take the network as the
target network. Thus, add transport type check to ensure
the transport type of the network is the expected one.
Bug: 153400606
Test: atest CtsNetTestCasesLatestSdk:\
android.net.cts.ConnectivityManagerTest#\
testGetMultipathPreference
Change-Id: I75dab1a00bbe1a1c75b548a6ce4ae3eacd325d92
6aac2067f6