Expand must-gather to better cover dependencies

[durera]

Standard k8s resources from the "well known" namespaces should be included if the namespaces are present:

• db2u
• ibm-common-services
• ibm-cpd
• ibm-cpd-operators
• amq-streams
• strimzi
• mongoce

Often we have to debug issues with out dependencies, and the summary information is only enough to know if they are healthy or not, we can't see why they aren't healthy from the current must-gather.

For db2:

oc get formations.db2u.databases.ibm.com ${DB2UCLUSTER_ID} -n ${NAMESPACE} -o go-template='' | column -s, -t