add var for replicas deployement to group vars

[boussaidijustice]

Issue description :

Describe your changes :

How to test :

Checklist before requesting a review

• I have performed a self-review of my code.
• The feature works locally.
• If it's relevant I added tests.
• Will this be part of a product update? If yes, please write one phrase about this update.

[boussaidijustice]

add variable for replicas deployement to group vars