[Android] At the end of make_apk execution, show reminder to upload packages for ARM and IA

Format the output as the requirement of XWALK1648.

BUG=https://crosswalk-project.org/jira/browse/XWALK-1648
Merge pull request #1950 from PeterWangIntel/PR1648

[Android] At the end of make_apk execution, show reminder to upload pack...