Fix pom files to contain all the information

Before this patch we were creating a new upload task
for creating maven repository which was not getting the
values from each project build.gradle. With this patch
we now use that task instead.

Bug: 62423455
Test: locally verified that the pom files now contain license tag
Change-Id: Ie22da868567327f5660a186f0a0c8b5d6368ee26
2 files changed