I looked into the history. The AS7 build was removed since 03/18/2017 since 1.2.0 development. Any reason why and how to add them back? If someone can give directions, I can add it back.
https://github.com/aerogear/aerogear-unifiedpush-server/commits/master/servers/pom.xml
Commits on Mar 18, 2016
@matzew@lfryc
Remove AS7 WAR and references
matzew committed with lfryc on Mar 18, 2016
https://github.com/aerogear/aerogear-unifiedpush-server/commit/14dae3fed27656ca65d44dc50806a62bdb03430b#diff-81882a40fd327815a95c9af82ee9f0d7