Fix gitlab integration test stage

By actually putting all the integration tests into their own stage we can potentially reduce wasted CI time by not running them if the "test" stage fails. Also we weren't actually using a "validate" stage since the validate job was specifying it was using the "test" stage

changed milestone to %2024.10 LEAP VPN Release

added Doing label

requested review from @cyberta

assigned to @maxb

added 2 commits

• 4ab3ef9e - 1 commit from branch main
• 9df8bb64 - Fix gitlab integration test stage

Compare with previous version

we probably need to update the remote integration test containers.