Move CaptivePortalDataTest to common test to support cts

Commit has to on top of aosp/1281921 to skip whole test in Q
device since CaptivePortalData class is introduced in R.

Result in Q will be:
[1/1] android.net.CaptivePortalDataTest#skippedClassForDevSdkMismatch: IGNORED

Bug: 152280218
Bug: 150640683
Test: atest CtsNetTestCasesLatestSdk:CaptivePortalDataTest on
      both Q and R device
Merged-In: Iddd00e1c85abe767b1a41a1761d3266ba322dba6
Change-Id: Iddd00e1c85abe767b1a41a1761d3266ba322dba6