Introducing new parameter that is derived from github variables - ROU…

[evgeny-pluzhnikov]

Introduced new github repo variable - ROUTE_PREFIX.

Description

This var is used when the route gets created. The route need to use domain name that is unique within OpenShift environment. Previously we were using hardcoded value of "chefs" - env.acronym.

The change solves the problem with deployment configuration when OpenShift Route fails to be created with already existing domain name.

Types of changes

Bug fix (non-breaking change which fixes an issue)

Checklist

• [X] I have read the CONTRIBUTING doc
• [X] I have checked that unit tests pass locally with my changes
• [X] I have run the npm script lint on the frontend and backend
• [X] I have added tests that prove my fix is effective or that my feature works
• [X] I have added necessary documentation (if appropriate)
• [X] I have approval from the product owner for the contribution in this pull request

Further comments