Changed artifactId to gradle-android-plugin
Changed artifactId to gradle-android-plugin

We also specify this in uploadArchives, so the generated artifacts
are not dependent on the folder name of the checked out code.

Signed-off-by: Ealden Esto E. Escanan <ff27627daef6b3172da4425363457b1137a9e29e@gmail.com>

t3t5u/gradle-android-plugin,jvoegele/gradle-android-plugin,t3t5u/gradle-android-plugin,jvoegele/gradle-android-plugin