Added create connector API for MLClient

[owaiskazi19]

Description

Added create connector API for MLClient.

Issues Resolved

Part of opensearch-project/flow-framework#70

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

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.

[codecov]

Codecov Report

Merging #1437 (26422bb) into main (374b835) will decrease coverage by 0.01%.
Report is 5 commits behind head on main.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #1437      +/-   ##
============================================
- Coverage     78.25%   78.24%   -0.01%     
  Complexity     2308     2308              
============================================
  Files           193      193              
  Lines          9449     9455       +6     
  Branches        942      942              
============================================
+ Hits           7394     7398       +4     
- Misses         1631     1634       +3     
+ Partials        424      423       -1     

Flag	Coverage Δ
ml-commons	78.24% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...rg/opensearch/ml/client/MachineLearningClient.java	100.00% <100.00%> (ø)
...pensearch/ml/client/MachineLearningNodeClient.java	93.04% <100.00%> (+0.18%)	⬆️

... and 2 files with indirect coverage changes

[owaiskazi19]

@ylwu-amzn @jngz-es can I get another review on this one? Thanks

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.x 2.x
# Navigate to the new working tree
cd .worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-1437-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 d265fc7f48b4b17f969b9a589ccde4f5ffd9891e
# Push it to GitHub
git push --set-upstream origin backport/backport-1437-to-2.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-1437-to-2.x.

[dhrubo-os]

@owaiskazi19 could you also please raise a backport PR for 2.x branch? Thanks.

[owaiskazi19]

@owaiskazi19 could you also please raise a backport PR for 2.x branch? Thanks.

@dhrubo-os this needs to be merged before backporting this.

[opensearch-trigger-bot]

The backport to feature/agent_framework_dev failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-feature/agent_framework_dev feature/agent_framework_dev
# Navigate to the new working tree
cd .worktrees/backport-feature/agent_framework_dev
# Create a new branch
git switch --create backport/backport-1437-to-feature/agent_framework_dev
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 d265fc7f48b4b17f969b9a589ccde4f5ffd9891e
# Push it to GitHub
git push --set-upstream origin backport/backport-1437-to-feature/agent_framework_dev
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-feature/agent_framework_dev

Then, create a pull request where the base branch is feature/agent_framework_dev and the compare/head branch is backport/backport-1437-to-feature/agent_framework_dev.