1630: Fix for when each ensemble is using the same diag/field/data yaml

[uramirez8707]

Description
Fixes issue when running with multiple ensembles and each ensemble is using the same diag/field/data yaml file
Fixes #1630

How Has This Been Tested?
CI
SPEAR with 3 ensembles

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• New check tests, if applicable, are included
• make distcheck passes