add template with multiple zen instances

[bluzarraga]

What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes # https://github.ibm.com/IBMPrivateCloud/roadmap/issues/64699

Special notes for your reviewer:

1. How the test is done?
   Deploy SF BR
   Deploy multiple instances of Zen within the same Fusion Application scope
   Successfully Backup and Restore all instances of zen

Note: currently, a quick burn cluster is not big enough to handle SF and multiple Zen instances

How to backport this PR to other branch:

1. Add label to this PR with the target branch name backport <branch-name>
2. The PR will be automatically created in the target branch after merging this PR
3. If this PR is already merged, you can still add the label with the target branch name backport <branch-name> and leave a comment /backport to trigger the backport action

[ibm-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bluzarraga

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