[db] inCluster: remove mysql version flag

[geropl]

Description

This caused a problem with installer: if it was not set, we render a malformed mysql chart. As we don't need it anymore we can drop it anyway.

Summary generated by Copilot

🤖 Generated by Copilot at 2d16cd4

Remove MySQL 5.7 support from cluster installation. This change simplifies the installation script, the helm chart, and the configuration struct for the database component.

Related Issue(s)

Fixes EXP-644

How to test

Documentation

Preview status

gitpod:summary

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold

[geropl]

/unhold