Fixed DeviceOwnerRequestingBugreportTestActivity creation.

It was throwing a NPE when the intent action was not set.

Test: manual verification (notice that calling
      adb shell am start com.android.cts.verifier/.managedprovisioning.DeviceOwnerRequestingBugreportTestActivity
      doesn't trigger the NPE)

Bug: 192395248
Fixes: 206344752

Change-Id: I274738b6476647aca042364ec98c7e8a70f48c47
1 file changed