fix(ingress): simplify ingress and avoid regex warning

[iainsproat]

• removes regex from ingress to avoid confusion over warning: "use-regex" Annotation Broken: "Warning: path /something(/|$)(.*) cannot be used with pathType Prefix" kubernetes/ingress-nginx#10200
• improves readability at expense of conciseness

Description & motivation

Changes:

To-do before merge:

• deploy to a testing environment and validate all affected routes are handled correctly

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

[iainsproat]

Tested in testing2 environment