The new plugin version uses maven repositories for some dependent libraries. You need to add some local repositories in Eclipse.
Go to the SDK Manager (Eclipse -> Window -> Android SDK Manager) and install Extras->Android Support Repository, and Extras->Google Repository.
That will fix "android.support" and google play services problems. I'm not sure if it will fix your "org.jboss.aerogear.android" problem.
In the new plugin version the aerogear libraries (android core, pipe, and push) are listed in a dependencies.gradle file. If the libraries do not get pulled at install or when
the repositories are added you might try doing a CLI cordova build (or maybe just a prepare) to see if they get pulled.
Re: [Aerogear-users] cordova plugin on android platform not working
You don't need to open the project with eclipse you can build and deploy with the cordova command line, if you want to use eclipse to open the project I suggest installing Thym (eclipse plugin for cordova)