Missing push plugin after ionic package

Ok, after a few days of digging the internet, I came to some kind of solution (I didn't try iOS though). I leave it there if anyone encounters the same issue :

Install Cordova CLI v. 6 :
npm install -g cordova@6

Remove cordova-android platform :
cordova platform rm android

Add cordova-android v. 6.1.2 :
ionic cordova platform add android@6.1.2 --save

Build your package with a valid profil
ionic package build android --profile <yourProfile>

Hope Ionic will come up with a better solution soon