SOLR-17359: Resolve recursive option (-r) failure (eg: in 'zk cp -r' and 'zk rm -r')

[rahulgoswami]

https://issues.apache.org/jira/browse/SOLR-SOLR-17359

Description

Commands with -r option (eg: zk cp -r or zk rm -r) would fail to operate on directories since the corresponding Zk*Tool.java expects a boolean value for "recursive" option, but instead gets the directory path. This results in errors of nature "ERROR: Index 0 out of bounds for length 0"

Solution

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Tests

Please describe the tests you've developed or run to confirm this patch implements the feature or solves the problem.

Checklist

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• I have reviewed the guidelines for How to Contribute and my code conforms to the standards described there to the best of my ability.
• I have created a Jira issue and added the issue ID to my pull request title.
• I have given Solr maintainers access to contribute to my PR branch. (optional but recommended)
• I have developed this patch against the main branch.
• I have run ./gradlew check.
• I have added tests for my changes.
• I have added documentation for the Reference Guide

[epugh]

I added a BATS test, and it failed... Merged the PR, and it passes! Thanks...