OSMH: Management Agent setup.sh script fails with Error "Deploying service plugin(s).Time out"

Attempting to configure the OSMH Management Agent by running the setup.sh script fails with the following error:

$ sudo /opt/oracle/mgmt_agent/agent_inst/bin/setup.sh opts=/tmp/input.rsp  
 /opt/oracle/mgmt_agent/agent_inst/bin/setup.sh opts=/tmp/input.rsp 
 Executing configure  
        Parsing input response file 
        Validating install key 
        Generating communication wallet 
        Generating security artifacts 
        Registering Management Agent 
                Found service plugin(s): [osmh] 
 
Starting agent... 
Agent started successfully 
 
Starting plugin deployment for: [osmh] 
Deploying service plugin(s)..............................Timed out. 
        Agent is unable to check if it deployed requested service plugin(s)  
successfully or not. Please check back later on the console. 
 
Agent setup completed and the agent is running. 
In the future agent can be started by directly running: sudo systemctl  start mgmt_agent 
Please make sure that you delete /tmp/input.rsp or store it in secure  location.