Migrate compareMajorMinorVersion to common libs

This is preparation for sharing version function with
EthernetTetheringTest.

- Move compareMajorMinorVersion, getVersionFromString to
  frameworks/libs/net/../testutils/DeviceInfoUtils
- Move testMajorMinorVersionCompare to
  packages/modules/NetworkStack/../testutils/DeviceInfoUtilsTest

Bug: 230359047
Test: atest \
android.net.cts.ConnectivityManagerTest#testSocketKeepaliveLimitTelephony \
android.net.cts.ConnectivityManagerTest#testSocketKeepaliveUnprivileged \
android.net.cts.ConnectivityManagerTest#testCreateTcpKeepalive \
android.net.cts.ConnectivityManagerTest#testSocketKeepaliveLimitWifi \
android.net.cts.ConnectivityManagerTest#testKeepaliveWifiUnsupported

Change-Id: I2c9ef22ce9bec6877b47a383cc4327dab7cc6416
1 file changed