Added changes for AdmissionControl Interceptor and AdmissionControlService for RateLimiting

[ajaymovva]

Description

This PR consists of below functionalities

• Adding core transport interceptors in network module to intercept the requests at the transport layer.
• AdmissionControlInterceptor to add the new AdmissionControlHandler, and that handler will be triggered for every transport request.
  -The initial implementation of AdmissionControlService, which is currently used to register the admission controllers and trigger the registered admission controllers for every transport request if it is enabled.
• AdmissionControlSettings -> Settings related to AdmissionController Feature.
• Basic Implementation of the CPU-Based Admission Controller, which currently only tracks the number of transport calls if the admission controller is enabled.
• CPUBasedAdmissionControllerSettings, which have the settings specific to the CPU-based admission controller.

Note:

This PR only have initial basic implementation of many classes. As this is the first PR for this feature we are making sure to give basic idea how admission controller is tracing the transport requests and eventually how we will reject the requests if the threshold breaches based on each admission controllers

Related Issues

Ref: #8910

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

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Compatible components: [https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git]

BUILD SUCCESSFUL in 24m 6s

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Compatibility status:

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Compatible components: [https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/performance-analyzer-rca.git]

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[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/OpenSearch/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.x
# Create a new branch
git switch --create backport/backport-9286-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 7c5a806d5bbee77c0c4a184a500bf5522a8d8cd7
# Push it to GitHub
git push --set-upstream origin backport/backport-9286-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-9286-to-2.x.