lineage-sdk: Support requiresConfig integers and add requiresConfigMask

*) Add support for integer requiresConfig resources (previously supported
   only strings and bools).  Preference is removed if the int is 0.

*) Add a new attribute requiresConfigMask that takes a string decimal int.
   If requiresConfig is an integer then the pref is removed if
   (requiresConfig resource value & requiresConfigMask value) == 0.
   If requiresConfig is not an integer type then requiresConfigMask
   is ignored.

*) Code clean-up for the rest of checking requiresConfig.

Change-Id: Ic2622809c02a94d9cecf6f59ed6e689fdb835458