[Druid-30] OBSDATA-10784: Fix cc-druid distribution module build-time

[Pinaki (pinaki-basu)]

Description

Druid build times in confluentinc/cc-druid for Build And Test For Commercial had regressed to 75mins. Most of this was spent in building the distribution module which took around 48mins.

Logs : [INFO] distribution ....................................... SUCCESS [48:39 min]

Updates :

• Explicitly use exec-maven-plugin >3.1.0 (earlier build versions used 1.6.0)
• Pass the flag --no-default-hadoop which doesn't pull down the default hadoop version. This is tested earlier in Druid-28 clusters.

The build time for distribution is down to 2mins.

Logs : [INFO] distribution ....................................... SUCCESS [01:39 min]
Test semaphore job-id : https://semaphore.ci.confluent.io/jobs/5abbb9d6-a6a6-4ebf-9e39-4ac2b3fa5cf7

Total build time for Build And Test For Commercial is down to 23mins.

This PR has:

• been self-reviewed.
  • using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.