MCLOUD-2789: Add custom ES plugins

[oshmyheliuk]

Description

https://jira.corp.magento.com/browse/MCLOUD-2789
Added functionality for installing custom elastic search plugins.

Manual testing scenarios

https://studio.cucumber.io/projects/210147/test-plan/folders/1564670/scenarios/5121522

1. Build elasticsearch image:

docker build -t test/es:latest ../magento-cloud-docker/images/elasticsearch/7.7

2. Create docker-compose.override.yaml file

version: "2.1"

services:
    elasticsearch:
        image: 'test/es:latest'

3. Add some custom plugins in .magento/services.yaml, for example:

elasticsearch:
    type: elasticsearch:7.7
    disk: 1024
    configuration:
        plugins:
            - analysis-icu
            - analysis-phonetic
            - analysis-stempel
            - analysis-nori

4. Run command for generating docker-compose.yaml

vendor/bin/ece-docker build:compose

5. Open docker-compose.yaml file and check that elasticsearch service contains:

    environment:
      - 'ES_PLUGINS=analysis-stempel analysis-nori'

P.S. analysis-icu and analysis-phonetic are skipped as they installed by default.

6. Run docker-compose up -d
7. Run docker-compose logs elasticsearch and check that added plugin was installed.

elasticsearch_1  | Intalling plugins:
elasticsearch_1  | -> Installing analysis-stempel
elasticsearch_1  | -> Downloading analysis-stempel from elastic
elasticsearch_1  | -> Installed analysis-stempel
elasticsearch_1  | -> Installing analysis-nori
elasticsearch_1  | -> Downloading analysis-nori from elastic
elasticsearch_1  | -> Installed analysis-nori

8. Repeat with different elasticsearch version >= 6.5

Release notes

Added support to use the Elasticsearch plugin configuration information from the services.yaml file to generate the docker-compose.yaml file for a Cloud Docker environment.

Associated documentation updates

magento/devdocs#7898

Contribution checklist

• Pull request has a meaningful description of its purpose
• Pull request introduces user-facing changes and includes meaningful release notes and documentation
• All commits are accompanied by meaningful commit messages

[NadiyaS]

don't we support more earlier versions as we do on cloud?

[oshmyheliuk]

They already reached EOL, I don't think we still need to add new features to old deprecated versions.

[mveeramneni]

QA Approved

[meker12]

@oshmyheliuk Remember to add the release notes and documentation PR to the PR description when applicable. Thanks!