git - Add Action - add on_poll action

[asur1on]

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Please check if your PR fulfills the following requirements:

• [ X ] Testing of all the changes has been performed (for bug fixes / features)
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• [ X ] Provide release notes as part of the PR submission which describe high level points about the changes for the upcoming GA release.
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• New App
• Bugfix
• [ X ] Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Documentation
• Other (please describe):

Security Considerations (REQUIRED)

• If you are exposing any endpoints using a REST handler,
  please document them in the manual_readme_content.md.
• If this is a new connector or you are adding new actions
  • Please document in the manual_readme_content.md all methods (eg, OAuth) used to authenticate
    with the service that the connector is integrating with.
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• Are you introducing any new cryptography modules? If yes, please elaborate their purpose:
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  If yes, please provide justification in an additional comment next to the ignored code.

Release Notes (REQUIRED)

• Provide release notes as part of the PR submission which describe high level points about the changes for the upcoming GA release.
  Created subset functions __git_pull, __git_status, and __git_clone for use in an on_poll action. on_poll will make use of the branch and repo configured in an asset config to regularly check for new updates on the branch

What is the current behavior? (OPTIONAL)

• Describe the current behavior that you are modifying.

What is the new behavior? (OPTIONAL)

• Describe the behavior or changes that are being added by this PR.
  add on_poll behavior

Other information (OPTIONAL)

• Any other information that is important to this PR such as screenshots of how the component looks before and after the change.

Pay close attention to (OPTIONAL)

• Any specific code change or test case points which must be addressed/reviewed at the time of GA release.

Screenshots (if relevant)

---

Thanks for contributing!

[splunk-soar-connectors-bot]

Thank you for your submission! We have a total of 20 PRs open right now, and we are working hard on all of them! We will take a look as soon as we can.

[splunk-soar-connectors-bot]

@asur1on Static Tests results for commit a5e8b60 - https://drive.google.com/file/d/1LvnrKJl6xCeUhvlQ4cR8DDSriKzfqPYu/view?usp=drivesdk

[splunk-soar-connectors-bot]

@asur1on Compile Tests results for commit a5e8b60 - https://drive.google.com/file/d/1AVQqlB34BUtXa-horoOK-Llh30mYkpv5/view?usp=drivesdk

[splunk-soar-connectors-bot]

@github-actions[bot] Static Tests results for commit ea54a30 - https://drive.google.com/file/d/1rmO2-BdMtieaPAPiWvkk0BUrO4lFExPN/view?usp=drivesdk

[splunk-soar-connectors-bot]

@github-actions[bot] Compile Tests results for commit ea54a30 - https://drive.google.com/file/d/1_jABz8xQT5h8qwTrPu2Q8zfcqX75-7oE/view?usp=drivesdk

[splunk-soar-connectors-bot]

@github-actions[bot] Static Tests results for commit c8b799c - https://drive.google.com/file/d/1istWYoaC_ZYkyP6DTD_0Z1HrMlf-LsgZ/view?usp=drivesdk

[splunk-soar-connectors-bot]

@github-actions[bot] Compile Tests results for commit c8b799c - https://drive.google.com/file/d/1dbYbm5snVpj22_fF1zXC2HUQU0QOUVWx/view?usp=drivesdk

[splunk-soar-connectors-bot]

@mmomin-crest Static Tests results for commit 436b480 - https://drive.google.com/file/d/1eTjLq1HcyEEH2Mdoz8zZ4aGny4FtxGwd/view?usp=drivesdk

[splunk-soar-connectors-bot]

@mmomin-crest Compile Tests results for commit 436b480 - https://drive.google.com/file/d/1it4x1yYafIuBvRGY3t-FBtB8QdCX5a2P/view?usp=drivesdk

[splunk-soar-connectors-bot]

@mmomin-crest Static Tests results for commit ddb8f82 - https://drive.google.com/file/d/1VA_20yjZCAPpcssTMDxrRc-A3eLIvU4K/view?usp=drivesdk

[splunk-soar-connectors-bot]

@mmomin-crest Compile Tests results for commit ddb8f82 - https://drive.google.com/file/d/14FeZUnHgv92fInmDkCvEoSpfpNdcKzCR/view?usp=drivesdk