[chore] drop _SERVICE for dependent service env variables

[puckpuck]

Changes

Drops _SERVICE from the environment variables associated with dependent services.

This is part of getting all services renamed based on the overall #1788 effort for all components in the demo.

Services affected by this:

• grafana
• jaeger
• kafka
• prometheus

This change also includes an update to a required component in the PHP-based quote service. Without this, the quote service would cause an error on startup.

Merge Requirements

For new features contributions, please make sure you have completed the following
essential items:

• CHANGELOG.md updated to document new feature additions
• Appropriate documentation updates in the docs
• Appropriate Helm chart updates in the helm-charts

Maintainers will not merge until the above have been completed. If you're unsure
which docs need to be changed ping the
@open-telemetry/demo-approvers.

[julianocosta89]

Please remove the src/quote/composer.json from this PR.