Verify stack boot up for 8.x and 8.0.0

[mtojek]

This PR expands the testing scope to cover 8.0.0 and 8.x separately.

[elasticmachine]

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• Start Time: 2022-01-16T23:28:14.550+0000

• Duration: 28 min 8 sec

• Commit: 6ee2368

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Passed	459
Skipped	0
Total	459

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• Description: make build test-stack-command-800 check-git-clean

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• Description: make build test-stack-command-8x check-git-clean

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[jsoriano]

What is the reason to consider 8.0 a special case?

[mtojek]

I suppose it's temporary.

Last week we faced an issue against 8.0.0 due to a missed backport and it would be good to catch some issues as soon as possible as we're heading for release.

EDIT:

BTW in the 8.1.0-SNAPSHOT we're observing this one, so it's a totally different root cause/problem.

[mtojek]

/test

[mtojek]

/test

[mtojek]

/test

[mtojek]

I think we can merge this one, as there is another, more serious problem:

Attaching to elastic-package-stack_kibana_1
�[36mkibana_1                     |�[0m [2022-01-16T23:40:05.855+00:00][INFO ][plugins-service] Plugin "metricsEntities" is disabled.
�[36mkibana_1                     |�[0m [2022-01-16T23:40:05.910+00:00][FATAL][root] Error: [config validation of [elasticsearch].username]: value of "elastic" is forbidden. This is a superuser account that cannot write to system indices that Kibana needs to function. Use a service account token instead. Learn more: https://www.elastic.co/guide/en/elasticsearch/reference/8.0/service-accounts.html
�[36mkibana_1                     |�[0m     at ensureValidConfiguration (/usr/share/kibana/src/core/server/config/ensure_valid_configuration.js:25:11)
�[36mkibana_1                     |�[0m     at Server.preboot (/usr/share/kibana/src/core/server/server.js:160:5)
�[36mkibana_1                     |�[0m     at Root.preboot (/usr/share/kibana/src/core/server/root/index.js:48:14)
�[36mkibana_1                     |�[0m     at bootstrap (/usr/share/kibana/src/core/server/bootstrap.js:99:9)
�[36mkibana_1                     |�[0m     at Command.<anonymous> (/usr/share/kibana/src/cli/serve/serve.js:216:5)
�[36mkibana_1                     |�[0m 
�[36mkibana_1                     |�[0m  FATAL  Error: [config validation of [elasticsearch].username]: value of "elastic" is forbidden. This is a superuser account that cannot write to system indices that Kibana needs to function. Use a service account token instead. Learn more: https://www.elastic.co/guide/en/elasticsearch/reference/8.0/service-accounts.html
�[36mkibana_1                     |�[0m