[BUG] Project integration tests require same version of plugins to be checked in

[dblock]

Describe the bug

Currently the following files are checked in.

src/test/resources/index-management/opendistro-index-management-1.13.0.0.zip
src/test/resources/notifications/opensearch-notifications-1.1.0.0-SNAPSHOT.zip
src/test/resources/job-scheduler/opensearch-job-scheduler-1.1.0.0-SNAPSHOT.zip

These are moving targets. Furthermore they are of the same release, while one would want to run integration tests against the released versions of any dependency. Which causes a catch-22 problem.

Expected behavior

These files should be deleted. One solution would be to download them during build. Another would be to build them (#119 tried to do that).

Additional context

Consider the developer experience that wants to check out this repo and just run ./gradlew integTest successfully.

[downsrob]

In the 1.3 branch we currently are still using the job scheduler resource in testing https://github.com/opensearch-project/index-management/tree/1.3/src/test/resources/job-scheduler

[ylwu-amzn]

AD using RCF jar and Protostuff jar https://github.com/opensearch-project/anomaly-detection/tree/1.3/lib, @dblock , we are going to revert the change to remove protostuff.

For RCF jar, we don't have latest version on Maven yet. @wnbts, do you know who is working on publishing RCF 2.x to Maven?

And we have job scheduler zip https://github.com/opensearch-project/anomaly-detection/tree/1.3/src/test/resources/job-scheduler, and BWC test https://github.com/opensearch-project/anomaly-detection/tree/1.3/src/test/resources/org/opensearch/ad/bwc/job-scheduler

[ylwu-amzn]

Same RCF issue for ml-commons, we have local RCF jar file https://github.com/opensearch-project/ml-commons/tree/1.3/ml-algorithms/lib. Will pull from Maven once 2.x published

[dblock]

@ylwu-amzn Same problem we're checking in the JARs into AD, opensearch-project/anomaly-detection#433