1. Create a new SNMPv2 credential.
2. Update an existing SNMPv2 credential.
3. Create a new username/password credential.
4. Update an existing username/password credential.
5. Assign a username/password credential to node(s)
6. Create a new SNMPv3 credential set.
7. Update an existing SNMPv3 credential set.
8. Assign an existing SNMPv3 credential to node(s).
9. List All Credentials.
10. List All Nodes and assigned credentials
