Agent-based installer fails with an error 'No agent found matching config'

Issue

• The agent-based installer stalls and does not proceed further with the below error in the agent-gather logs:

level=info msg="No agent found matching config at /etc/assisted/hostconfig/node1 (11:22:33:44:55:66, 11:22:33:44:55:67)"
level=info msg="No agent found matching config at /etc/assisted/hostconfig/node2 (11:22:33:44:55:68, 11:22:33:44:55:69)"
level=info msg="Not all hosts present yet"
level=info msg="Sleeping for 32s"