Specify env vars consistently via yaml dict syntax

[wyarde]

Making environment variable specification consistent between the kibana service and elastic search services by using yaml dict everywhere

[mergify]

This pull request is now in conflict. Could you fix it @wyarde? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch <remote-repo>
git checkout -b specify_env_vars_with_dict_syntax <remote-repo>/specify_env_vars_with_dict_syntax
git merge <remote-repo>/main
git push <remote-repo> specify_env_vars_with_dict_syntax

[mergify]

This pull request does not have a backport label. Could you fix it @wyarde? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-/d./d is the label to automatically backport to the /d./d branch. /d is the digit
  NOTE: backport-skip has been added to this pull request.

[mergify]

This pull request is now in conflict. Could you fix it @wyarde? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch <remote-repo>
git checkout -b specify_env_vars_with_dict_syntax <remote-repo>/specify_env_vars_with_dict_syntax
git merge <remote-repo>/main
git push <remote-repo> specify_env_vars_with_dict_syntax

[mergify]

This pull request is now in conflict. Could you fix it @wyarde? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch <remote-repo>
git checkout -b specify_env_vars_with_dict_syntax <remote-repo>/specify_env_vars_with_dict_syntax
git merge <remote-repo>/main
git push <remote-repo> specify_env_vars_with_dict_syntax

[mergify]

This pull request is now in conflict. Could you fix it @wyarde? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch <remote-repo>
git checkout -b specify_env_vars_with_dict_syntax <remote-repo>/specify_env_vars_with_dict_syntax
git merge <remote-repo>/main
git push <remote-repo> specify_env_vars_with_dict_syntax

[mergify]

This pull request is now in conflict. Could you fix it @wyarde? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch <remote-repo>
git checkout -b specify_env_vars_with_dict_syntax <remote-repo>/specify_env_vars_with_dict_syntax
git merge <remote-repo>/main
git push <remote-repo> specify_env_vars_with_dict_syntax