Update garnetCache.json

[mbhaskar]

Changing entity names to resolve conflicts in sdk generation.

This PR is in response to a conflict generated due to ClusterResrouce entity name being used already but duplicated in garnetCache.json. Entity names are appended with Garnet to resolve conflicts

** Was added to a conversation with Azure Dev Exp and this seems to be blocking the TSP Migration

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[github-actions]

Next Steps to Merge

Next steps that must be taken to merge this PR:

• ❌ This PR targets either the main branch of the public specs repo or the RPSaaSMaster branch of the private specs repo. These branches are not intended for iterative development. Therefore, you must acknowledge you understand that after this PR is merged, the APIs are considered shipped to Azure customers. Any further attempts at in-place modifications to the APIs will be subject to Azure's versioning and breaking change policies. Additionally, for control plane APIs, you must acknowledge that you are following all the best practices documented by ARM at aka.ms/armapibestpractices. If you do intend to release the APIs to your customers by merging this PR, add the PublishToCustomers label to your PR in acknowledgement of the above. Otherwise, retarget this PR onto a feature branch, i.e. with prefix release- (see aka.ms/azsdk/api-versions#release--branches).
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• ❌ The required check named Swagger BreakingChange has failed. To unblock this PR, follow the process at aka.ms/brch.

Comment generated by summarize-checks workflow run.

[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
Swagger	Microsoft.DocumentDB-DocumentDB
Go	sdk/resourcemanager/cosmos/armcosmos
Java	com.azure.resourcemanager:azure-resourcemanager-cosmosdbdocumentdb
JavaScript	@azure/arm-cosmosdb
Python	azure-mgmt-cosmosdb

[mentat9]

@mbhaskar - You will need to fix the [Required] Swagger BreakingChange check before ARM signoff. You should also put back the template comment at the top and fill out the intake form to help reviewers understand what your PR is for.

I see there are no REST changes [currently] in this PR, so it doesn't really need ARM review, but it should stay in the review queue until the CI checks are fixed.