[FEATURE] Support multiple port_mappings for the primary container

[nvpnathan]

Is your feature request related to a problem? Please describe

Primary container in the ECS Service module only supports 1 port/protocol.

Describe the solution you'd like

ECS Service module support port_mappings map. This will allow multiple ports to be exposed on the primary container.

Describe alternatives you've considered

A clear and concise description of any alternative solutions or features you've considered. N/A

Additional context

Add any other context or screenshots about the feature request here.