Merge pull request #100439 from jeana-redhat/OSDOCS-16512-4.15

OSDOCS-16512: Update Machine management TP tracker for CAPI 4.15

Author: jeana-redhat

release_notes/ocp-4-15-release-notes.adoc

@@ -2547,6 +2547,16 @@ In the following tables, features are marked with the following statuses:
 |Technology Preview
 |Technology Preview
 
+|Managing machines with the Cluster API for {ibm-power-server-name}
+|Technology Preview
+|Technology Preview
+|Technology Preview
+
+|Managing machines with the Cluster API for {rh-openstack}
+|Not Available
+|Not Available
+|Technology Preview
+
 |Defining a vSphere failure domain for a control plane machine set
 |Not Available
 |Not Available