solution for assignment 3

[akash-gautam]

Created a CRD named dummyDB, the CRD has four inputs:

1. Replicas : to specify how many instances of db should run, used by controller to set replicas statefulset/deployment spec.
2. Size: to specify the size of the db's storage, used by controller to create a pvc.
3. AdminPassword: to specify the admin password, used by controller to create secret.
4. GVK: to specify whether we should create a deployment or statefulset for the db, the controller acts accordingly.

The CR is made owner of all the resources using controllerutil.SetControllerReference