Tracking card for new `deploy` keys in v3

[cdrage]

We have to cover the new keys in deploy for v3 of Docker Compose, at the moment, we only have mem_limit complete.

New keys:

• mode
• replicas
• placement
• update_config
• resources
• restart_policy
• labels
• cpus (under 'resources')
• memory (under 'resources')

[surajnarwade]

I will take replicas key

[cdrage]

@surajnarwade I already started work on it, sorry :( I'm setting up a separate function so that we can parse these keys easier.

[surajnarwade]

@cdrage okay no worries

[ashetty1]

@cdrage also, Ports in long syntax?

[cdrage]

@ashetty1 Open up another issue for that. But it's v3.2 and it's not even integrated into moby/moby yet.

[cdrage]

Hey @surajnarwade wanna take this up and see how we can implement the deploy side of things? I was starting work on this but got side-tracked by the 1.0.0 release

[surajnarwade]

@cdrage, sure, can you point me towards where you start

[cdrage]

@surajnarwade https://github.com/docker/cli/blob/master/cli/compose/types/types.go#L159 would be a good start. Luckily we're able to easily access the deploy keys via v3.go 😄