make configurable postgresql disk size

[navi86]

trafficstars

What

Describe what the change is solving It allows to have custom size of pvc disk size

How

use helm chart values

Recommended reading order

1. x.java
2. y.java

Can this PR be safely reverted / rolled back?

If you know that your PR is backwards-compatible and can be simply reverted or rolled back, check the YES box. this pr by default work as it was working before

Otherwise if your PR has a breaking change, like a database migration for example, check the NO box.

If unsure, leave it blank.

• [ ] YES 💚
• [ ] NO ❌

🚨 User Impact 🚨

Are there any breaking changes? What is the end result perceived by the user? If yes, please merge this PR with the 🚨🚨 emoji so changelog authors can further highlight this if needed.

[navi86]

@xpuska513 could you pls review this pr ?

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