lineage-sdk: Update attr.xml for aapt2

*) the sdk is now using aapt2

*) aapt2 is unhappy with "lineage:..." name attribute value format
   (errors with invalid character).
   
*) update in a way that aapt2 is happy with

Change-Id: I96ecc14c4a6de00272a5ad4f513b62f21289ac45