From 7.3 onwards, the procedure for configuring SSL credentials for templates-based deployments omits two steps required if mutual authentication is in use:

• Create a broker truststore to import the client cert: $ keytool -import -alias client -keystore broker.ts -file client_cert
• Specify the broker truststore when creating the application secret: $ oc create secret generic amq-app-secret --from-file=broker.ks --from-file=broker.ts

This issue is to track fixing of this issue and reflecting the fix back to the doc for 7.3, 7.4, 7.5 & 7.6.