Add gradle/maven CI checks for OpenSearch plugins that verify (the order of) maven repos

[dblock]

Is your feature request related to a problem? Please describe

It's very easy to forget to keep mavenLocal in a repo's gradle/maven configuration, which prevents the bundle build from forcing a locally built OpenSearch, common-utils or job-scheduler dependency. For example, https://github.com/opensearch-project/index-management/pull/141/files#r717955366

Describe the solution you'd like

Add a check that lists maven repos that are being used and ensure the list is the one documented in https://github.com/opensearch-project/opensearch-plugins/blob/main/BUILDING.md: mavenLocal(), mavenCentral(), then maven { url "https://aws.oss.sonatype.org/content/repositories/snapshots" }.

Describe alternatives you've considered

No response

Additional context

No response

[gaiksaya]

Hi @dblock,

We did confirm same as an effort for opensearch-project/opensearch-devops#114
Do we want to add this check as a part of build process/ci check?