feat(helm chart): include multi-region feature flag and mount volume from secret

[iainsproat]

Description & motivation

The Helm chart sets the FF_WORKSPACES_MULTI_REGION_ENABLED and MULTI_REGION_CONFIG_PATH environment variables.

Where required, it mounts the multi-region-config.json file at the path given by the value of MULTI_REGION_CONFIG_PATH.

Changes:

To-do before merge:

Screenshots:

Validation of changes:

Checklist:

• My pull request follows the guidelines in the Contributing guide?
• My pull request does not duplicate any other open Pull Requests for the same update/change?
• My commits are related to the pull request and do not amend unrelated code or documentation.
• My code follows a similar style to existing code.
• I have added appropriate tests.
• I have updated or added relevant documentation.

References