Add support for different connection URL for QAcc containers

[aminlatifi]

QAcc has two kind of containers, one for running background jobs and one for serving as graphql server to users.
We need to support different DB connection URL for them

[mhmdksh]

@aminlatifi In order for this to happen and as we are working on the same application, you will have to define a flag for the connection URI to be different depending on the mode that the application is running in. For example:

• If GRAPHQL_MODE=true --> DB URI is graph-ql-db-uri=URI_VALUE
• If JOB_MODE=true --> DB URI is job-db-uri=URI_VALUE
  WDYT??

Also what do you mean by a different DB connection?? Do you mean a read only connection? or do you mean a connection with another user?? Or do you mean a connection to a totally different DB??

It's important to clear these points, since the implementation would be different depending on the answer