Upgrade all sites from one cr to another

gistfile1.txt

    fromTag = 'v0.1.19';
    toTag = 'v0.1.20';
    
    $injector.get('CodeRevisionResource').all().then(function(codeRevisions) {
      cr = _.findWhere(codeRevisions, {tag: fromTag});
      $injector.get('SiteResource').indexByCodeRevision(cr.id, true).then(function(sites) {
        _.each(sites, function(site) {
          site.upgrade(toTag, '[email protected]:pressly/ng-pressilla.git').then(function(res) {
            console.log(res.id, 'scheduled for upgrade');
          });
        });
      });
    });