Create admin role id not exists (migration from 1.7 to 1.8)

create.admin.roles.if.not.exists.js

var now = new Date();
db.users.find().forEach(
  function(user) {
    if (user._id === "admin") {
      print("admin found")
      var exists = db.memberships.find({_id: { userId : "admin", referenceId : "DEFAULT", referenceType : "MANAGEMENT"}}).count() > 0;
      print("Does admin already has new memberships? " + exists)
      if (!exists) {
        db.memberships.insert([
          {
            _id: {
              userId: "admin",
              referenceId: "DEFAULT",
              referenceType: "MANAGEMENT"
            },
            _class: "io.gravitee.repository.mongodb.management.internal.model.MembershipMongo",
            type: "1:ADMIN",
            createdAt: now,
            updatedAt: now
          },
          {
            _id: {
              userId: user._id,
              referenceId: "DEFAULT",
              referenceType: "PORTAL"
            },
            _class: "io.gravitee.repository.mongodb.management.internal.model.MembershipMongo",
            type: "2:ADMIN",
            createdAt: now,
            updatedAt: now
          }
        ]);
        print("memberships inserted !")
      }
    }
  }
)