[POA-527] Add apidump flags support in ecs command

[mudit-postman]

Plan: https://postmanlabs.atlassian.net/wiki/spaces/PO/pages/5053218962/Plan+Insights+Agent+ECS+and+other+tasks+for+supporting+50+users

• Added support for the following eight flags: filter, host-allow, host-exclusions, interfaces, path-allow, path-exclusions, rate-limit and stats-log-delay.
• Added new vars and persistent flags for them
• These flags were used in makeAgentContainerDefinition() and add.go while constructing the entryPoint slice.
• For flags which are of slice type we are adding them separately instead of joining them with comma(,)
• These flags can also be used in all three sub-commands, i.e. add, cf-fragment and task-def

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Reviewers:

• Primary: @shreys7
• Secondary: @mgritter

[shreys7]

How are we planning to test this @mudit-postman ?

[mudit-postman]

How are we planning to test this @mudit-postman?

I am testing this by logging the flag values and using the Postman beta environment's keys. I am also commenting the final step, where the updated definition is applied.