[GitHub] [airflow] KevinYang21 opened a new pull request #6550: [AIRFLOW-5897] Allow setting -1 as pool slots value in webserver

[GitBox <gi...@apache.org>]

KevinYang21 opened a new pull request #6550: [AIRFLOW-5897] Allow setting -1 as pool slots value in webserver
URL: https://github.com/apache/airflow/pull/6550
 
 
   ### Jira
   
   - [x] My PR addresses the following [Airflow Jira](https://issues.apache.org/jira/browse/AIRFLOW-5897) issues and references them in the PR title.
     - https://issues.apache.org/jira/browse/AIRFLOW-5897
   
   ### Description
   
   - [x] Here are some details about my PR, including screenshots of any UI changes:
   Given https://github.com/apache/airflow/pull/6520, we should also allow -1 as pool slots value in the webserver.
   
   ### Tests
   
   - [x] My PR adds the following unit tests __OR__ does not need testing for this extremely good reason:
   Too minor a change to add unit test. Tested locally.
   
   ### Commits
   
   - [x] My commits all reference Jira issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)":
     1. Subject is separated from body by a blank line
     1. Subject is limited to 50 characters (not including Jira issue reference)
     1. Subject does not end with a period
     1. Subject uses the imperative mood ("add", not "adding")
     1. Body wraps at 72 characters
     1. Body explains "what" and "why", not "how"
   

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