Fix keyboard opening on pattern entry.

For protected apps, on some devices (consistent repro on flo), the soft
keyboard will open every time you enter the LockPatternActivity. Fix
this by setting the keyboard state to hidden in the manifest for this
activity.

Change-Id: I56fb6644cacd7a05100199637b1a27159ca04829
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0