Fix testcase fail

-Ignore testcase in RemoteDeviceNameDialogFragmentTest
-Fix SettingsPreferenceFragmentTest and ApnEditorTest testcase fail

Test: make RunSettingsRoboTests
Change-Id: I63053cd2256c9c00f92b57a813513e5df05fd60a
Bug: 119592320

tests/robotests/src/com/android/settings/SettingsPreferenceFragmentTest.java

@@ -69,6 +69,7 @@ public class SettingsPreferenceFragmentTest {
         mContext = RuntimeEnvironment.application;
         mFragment = spy(new TestFragment());
         doReturn(mActivity).when(mFragment).getActivity();
+        when(mFragment.getContext()).thenReturn(mContext);
 
         mEmptyView = new View(mContext);
         ReflectionHelpers.setField(mFragment, "mEmptyView", mEmptyView);