Credential management
- SNMP v1/v2
- "snmp-server community <new Community String> ro "
- "snmp-server community <new Community String> rw "
- "no snmp-server community <old Community String> ro"
- "no snmp-server community <old Community String> ro"
- Account
- "show aaa authentication"
- "username <username> password <password> role network-admin"
- "no username < old Username>"