Add check for insights-client status (#21111)

Add assertion for insights status

Author: ColeHiggins2

pytest_fixtures/component/rh_cloud.py

@@ -14,6 +14,9 @@ def enable_insights(host, satellite, org, activation_key):
         org=org,
         rhel_distro=f"rhel{host.os_version.major}",
     )
+    result = host.execute('insights-client --status')
+    assert result.status == 0, f'insights-client not registered on {host.hostname}: {result.stdout}'
+    assert "Insights API confirms registration" in result.stdout
     # Sync inventory if using hosted Insights
     if not satellite.iop_enabled:
         satellite.generate_inventory_report(org)