Fix ml inference ingest processor always return list using JsonPath

[mingshl]

Description

In ml inference ingest processor, when using jsonpath in input_maps, the json path configuration is set with always_return_list, however, in connectors and in ml inference search processors, the configuration is not always return list.

Trying to use the standard json path configuration in modelExecutor class, so that ml inference search processors and ingest processors are using the same configuration.

The default config now is returnning the original format of the object,

in the sample doc mentioned in the issue:
for simple object like this sample item index,

{
   "item_text":"red shoes"
}

, if configuring input_map as {"input": "$.item.text"},

the model input will be in original string format

{
  "input": "red shoes"
}

if configuring input_map as {"input": "item.text"},

the model input will also remain the string format

{
  "input": "red shoes"
} 

Related Issues

#2974

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[ylwu-amzn]

Seems like a bug , should we also backport this to old versions ?

[mingshl]

of course, back-porting back till 2.14

[opensearch-trigger-bot]

The backport to 2.14 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-2.14 2.14
# Navigate to the new working tree
cd .worktrees/backport-2.14
# Create a new branch
git switch --create backport/backport-2985-to-2.14
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 f4b472480390805e0a24de46d9781a665cfb6184
# Push it to GitHub
git push --set-upstream origin backport/backport-2985-to-2.14
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.14

Then, create a pull request where the base branch is 2.14 and the compare/head branch is backport/backport-2985-to-2.14.

[opensearch-trigger-bot]

The backport to 2.15 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-2.15 2.15
# Navigate to the new working tree
cd .worktrees/backport-2.15
# Create a new branch
git switch --create backport/backport-2985-to-2.15
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 f4b472480390805e0a24de46d9781a665cfb6184
# Push it to GitHub
git push --set-upstream origin backport/backport-2985-to-2.15
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.15

Then, create a pull request where the base branch is 2.15 and the compare/head branch is backport/backport-2985-to-2.15.

[opensearch-trigger-bot]

The backport to 2.16 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-2.16 2.16
# Navigate to the new working tree
cd .worktrees/backport-2.16
# Create a new branch
git switch --create backport/backport-2985-to-2.16
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 f4b472480390805e0a24de46d9781a665cfb6184
# Push it to GitHub
git push --set-upstream origin backport/backport-2985-to-2.16
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.16

Then, create a pull request where the base branch is 2.16 and the compare/head branch is backport/backport-2985-to-2.16.