[usage] Use DefaultClientOptions when creating grpc client connection

[easyCZ]

Description

To re-use existing setup and configuration for grpc clients. We get uniformity and ability to better track metrics

Related Issue(s)

Fixes #

How to test

Release Notes

NONE

Documentation

Werft options:

• [ ] /werft with-preview
• [ ] /werft with-integration-tests=all Valid options are all, workspace, webapp, ide