Add Essential and containerMemory as params

[samkahchiin]

Summary

• Add Essential and containerMemory as params

[swiknaba]

we need to backport PR's from a branch that has this file removed, see: #84

--> Maybe we open a branch on our fork specific for that, and name it e.g. backport?

... or we drop this file entirely, and manage access to this repo manually instead of via teams

[swiknaba]

Dropped this on our fork and replaced functionality by manually adding people in the settings to ease upstreaming.

[marcqualie]

@samkahchiin What is containerMemory in this context? There is already a memory field, which containerMemory seems to just update here but without the predefined values.

[samkahchiin]

@marcqualie
the containerMemory refer to the memory attribute under the container definitions => https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definition_parameters.html#container_definition_memory
This will allow user to decide the memory allocated to the specified container