OSDOCS#10604: Add a node pool definition and move glossary one level up

Author: xenolinux

hosted_control_planes/index.adoc

@@ -8,14 +8,14 @@ You can deploy {product-title} clusters by using two different control plane con
 
 toc::[]
 
+include::modules/hosted-control-planes-concepts-personas.adoc[leveloffset=+1]
 include::modules/hosted-control-planes-overview.adoc[leveloffset=+1]
 
 [role="_additional-resources"]
 .Additional resources
 
 * link:https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.9/html/clusters/cluster_mce_overview#hosted-control-planes-intro[{hcp-capital}]
 
-include::modules/hosted-control-planes-concepts-personas.adoc[leveloffset=+1]
 include::modules/hosted-control-planes-version-support.adoc[leveloffset=+1]
 include::modules/hosted-control-planes-support-matrix.adoc[leveloffset=+1]
 

modules/hosted-control-planes-concepts-personas.adoc

@@ -27,6 +27,8 @@ management cluster:: An {product-title} cluster where the HyperShift Operator is
 
 management cluster infrastructure:: Network, compute, and storage resources of the management cluster.
 
+node pool:: A resource that contains the compute nodes. The control plane contains node pools. The compute nodes run applications and workloads.
+
 [id="hosted-control-planes-personas_{context}"]
 == Personas