Always set orientation as portrait for Autofill tests.

Otherwise some tests might fail due to elements not fitting in,
IME integration, etc...

Fixes: 77657403
Test: ran CtsAutoFillServiceTestCases with device phisically set on landscape;
      before the change it had 62 failures, after the change it had only 2
      (both caused by known, unrelated issues)

Change-Id: Ic39f4313ab9a12a4219194bd25460fb70f392624
1 file changed