Add option to disable director

[PaulLesur]

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What is this feature about (1 sentence)

Add an option to disable director when not needed.

Why is it needed? What is the value? For whom do we build it?

We use Sorry Cypress and chose to deploy mongo on another cluster than the director / api / dashboard. So we use the same chart 2 times but there is no option to disable the director.

High-level feature overview

Just add a enabled: true/false for the director deployment.

Other

Link to pull request : #160