Add v3.22.0-beta.2 to CHANGELOG
Add v3.22.0-beta.2 to CHANGELOG

(cherry picked from commit a409f1de8396d11faf0e78b7b662370379417eb8)

elwayman02/ember.js,emberjs/ember.js,givanse/ember.js,elwayman02/ember.js,sly7-7/ember.js,elwayman02/ember.js,sly7-7/ember.js,elwayman02/ember.js,givanse/ember.js,sly7-7/ember.js,sandstrom/ember.js,mfeckie/ember.js,emberjs/ember.js,knownasilya/ember.js,stefanpenner/ember.js,givanse/ember.js,stefanpenner/ember.js,mixonic/ember.js,givanse/ember.js,knownasilya/ember.js,tildeio/ember.js,mfeckie/ember.js,sandstrom/ember.js,mfeckie/ember.js,knownasilya/ember.js,stefanpenner/ember.js,mfeckie/ember.js,mixonic/ember.js,sandstrom/ember.js,mixonic/ember.js,emberjs/ember.js,tildeio/ember.js,tildeio/ember.js