enhance: Refine Replica manager colle2Replicas secondary index

[congqixia]

Related to #37630

This PR add a new util coll2Replicas secondary index to reduce map access & iteration while get replicas by collection

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia

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Needs approval from an approver in each of these files: - ~~[internal/querycoordv2/meta/OWNERS](https://github.com/milvus-io/milvus/blob/master/internal/querycoordv2/meta/OWNERS)~~ [congqixia] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[mergify[bot]]

@congqixia E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

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[mergify[bot]]

@congqixia go-sdk check failed, comment rerun go-sdk can trigger the job again.

[congqixia]

rerun go-sdk

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.47619% with 4 lines in your changes missing coverage. Please review.

Project coverage is 81.06%. Comparing base (70e6a00) to head (c4f1b83). Report is 20 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/querycoordv2/meta/replica_manager.go	90.47%	3 Missing and 1 partial :warning:

Additional details and impacted files

[](https://app.codecov.io/gh/milvus-io/milvus/pull/37906?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) ```diff @@ Coverage Diff @@ ## master #37906 +/- ## ========================================== + Coverage 81.04% 81.06% +0.02% ========================================== Files 1357 1357 Lines 190143 190202 +59 ========================================== + Hits 154095 154189 +94 + Misses 30584 30554 -30 + Partials 5464 5459 -5 ``` | [Components](https://app.codecov.io/gh/milvus-io/milvus/pull/37906/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) | Coverage Δ | | |---|---|---| | [Client](https://app.codecov.io/gh/milvus-io/milvus/pull/37906/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) | `72.16% <ø> (ø)` | | | [Core](https://app.codecov.io/gh/milvus-io/milvus/pull/37906/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) | `68.87% <ø> (ø)` | | | [Go](https://app.codecov.io/gh/milvus-io/milvus/pull/37906/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) | `83.24% <88.37%> (+0.02%)` | :arrow_up: | | [Files with missing lines](https://app.codecov.io/gh/milvus-io/milvus/pull/37906?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io) | Coverage Δ | | |---|---|---| | [internal/querycoordv2/meta/replica\_manager.go](https://app.codecov.io/gh/milvus-io/milvus/pull/37906?src=pr&el=tree&filepath=internal%2Fquerycoordv2%2Fmeta%2Freplica_manager.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io#diff-aW50ZXJuYWwvcXVlcnljb29yZHYyL21ldGEvcmVwbGljYV9tYW5hZ2VyLmdv) | `81.37% <90.47%> (+0.38%)` | :arrow_up: | ... and [28 files with indirect coverage changes](https://app.codecov.io/gh/milvus-io/milvus/pull/37906/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=milvus-io)

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[weiliu1031]

/lgtm