NCMP is responsible to publish error message response (Flow diagram #7) to the client topic in case of non resposing dmi-plugin (Default request timeout is 30 seconds)

• Error message can be handled based on http response code (check for non 2xx response status)
• Use existing method of ncmp to get all existing cm handles and keep cm handles that belongs to non responding dmi-plugin (ref of existing method )
• Publish error message to the client topic

A/C :

1. Document and agreed the structure of error message "Message Flow details" #8 (https://wiki.onap.org/display/DW/CPS-1515%3A+Spike%3A+Support+Multiple+CM-Handles+for+NCMP+Get+Operation#CPS1515:Spike:SupportMultipleCMHandlesforNCMPGetOperation-MessageFlowdetails)
2. Team demo and verify the error message response