Support additional more keys for keyboard layout test

...s/src/com/android/inputmethod/keyboard/layout/Azerty.java

...rc/com/android/inputmethod/keyboard/layout/Bulgarian.java

...com/android/inputmethod/keyboard/layout/BulgarianBds.java

...c/com/android/inputmethod/keyboard/layout/EastSlavic.java

tests/src/com/android/inputmethod/keyboard/layout/Greek.java

...c/com/android/inputmethod/keyboard/layout/LayoutBase.java

...s/src/com/android/inputmethod/keyboard/layout/Nordic.java

...s/src/com/android/inputmethod/keyboard/layout/Qwerty.java

...s/src/com/android/inputmethod/keyboard/layout/Qwertz.java

.../com/android/inputmethod/keyboard/layout/SouthSlavic.java

.../src/com/android/inputmethod/keyboard/layout/Spanish.java

tests/src/com/android/inputmethod/keyboard/layout/Swiss.java

...utmethod/keyboard/layout/expected/AbstractLayoutBase.java

...oid/inputmethod/keyboard/layout/expected/ExpectedKey.java

...hod/keyboard/layout/expected/ExpectedKeyboardBuilder.java

.../inputmethod/keyboard/layout/tests/EnglishCustomizer.java

...d/inputmethod/keyboard/layout/tests/FrenchCustomizer.java

...d/inputmethod/keyboard/layout/tests/GermanCustomizer.java

...id/inputmethod/keyboard/layout/tests/LayoutTestsBase.java

...putmethod/keyboard/layout/tests/PortugueseCustomizer.java