Updated embedded m2 repo with Android plugin 1.2.0.

This CL also removes plugin 1.0.0. The repo only includes
versions 1.1.0 and 1.2.0 (the previous "recommended"
version and the current "recommended" version.)

Change-Id: I01976036c4b22fadec8680ae3e34411d16e4ca79
82 files changed