Add Role Cert Naming Format

[y-myajima]

Description

We have added environment variables to make the output directory and file names for the Role Cert more flexible:

• ROLE_CERT_NAMING_FORMAT
• ROLE_CERT_KEY_NAMING_FORMAT

Assignees

• [x] Assignees is set

Type of changes

• [x] Apply one or more labels of the following that fits:
  • bug: Bug fix
  • dependencies: Dependency upgrades
  • documentation: Documentation changes
  • enhancement: New Feature
  • good first issue: First contribution
  • logging: Log changes
  • refactor: Refactoring (no functional changes, no api changes)

Flags

- [ ] Breaks backward compatibility
- [ ] Requires a documentation update
- [ ] Has untestable code

---

Checklist

- [ ] Followed the guidelines in the CONTRIBUTING document
- [ ] Added prefix `[skip ci]`/`[ci skip]`/`[no ci]`/`[skip actions]`/`[actions skip]` in the PR title if necessary
- [ ] Tested and linted the code
- [ ] Commented the code
- [ ] Made corresponding changes to the documentation

Checklist for maintainer

- [ ] Use `Squash and merge`
- [ ] Double-confirm the merge message has prefix `[skip ci]`/`[ci skip]`/`[no ci]`/`[skip actions]`/`[actions skip]`
- [ ] Delete the branch after merge

[y-myajima]

moved to https://github.com/AthenZ/k8s-athenz-sia/pull/149