Use correct nxtVersionShort during integTest when pulling min

[peterzhuamazon]

Description

Use correct nxtVersionShort during integTest when pulling min
You cannot pull a version that is not released yet, so use SNAPSHOT.

Related Issues

 * What went wrong:
Execution failed for task ':asynSearchCluster#oldVersionClusterTask1'.
> Could not resolve all files for configuration ':opensearch_distro_extracted_testclusters--asynSearchCluster1-0-3.3.2-'.
   > Could not resolve opensearch-distribution:opensearch:3.3.2.
     Required by:
         root project :
      > Could not resolve opensearch-distribution:opensearch:3.3.2.
         > Could not get resource 'https://artifacts.opensearch.org/releases/core/opensearch/3.3.2/opensearch-min-3.3.2-linux-x64.tar.gz'.
            > Could not HEAD 'https://artifacts.opensearch.org/releases/core/opensearch/3.3.2/opensearch-min-3.3.2-linux-x64.tar.gz'. Received status code 403 from server: Forbidden
      > Could not resolve opensearch-distribution:opensearch:3.3.2.
         > Could not get resource 'https://artifacts.opensearch.org/release-candidates/core/opensearch/3.3.2/opensearch-min-3.3.2-linux-x64.tar.gz'.
            > Could not HEAD 'https://artifacts.opensearch.org/release-candidates/core/opensearch/3.3.2/opensearch-min-3.3.2-linux-x64.tar.gz'. Received status code 403 from server: Forbidden

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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