AGENT-905: Start agent-add-node.service in appliance

[zaneb]

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[openshift-ci-robot]

@zaneb: This pull request references AGENT-905 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.16.0" version, but no target version was set.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@zaneb: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-agent-ha-dualstack	6ec2525	link	false	/test e2e-agent-ha-dualstack
ci/prow/e2e-agent-compact-ipv4-appliance	6ec2525	link	false	/test e2e-agent-compact-ipv4-appliance
ci/prow/okd-e2e-agent-compact-ipv4	6ec2525	link	false	/test okd-e2e-agent-compact-ipv4

Full PR test history. Your PR dashboard.

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