Errors should not start capitalised and they should not contain the word error
or state that they "failed" as we already know it is an error
Signed-off-by: Kristoffer Dalby <kristoffer@dalby.cc>
Add run ID-based isolation to container naming and network setup to
enable multiple integration tests to run concurrently on the same
Docker daemon without conflicts.
Changes:
- hsic: Add run ID prefix to headscale container names and use dynamic
port allocation for metrics endpoint (port 0 lets kernel assign)
- tsic: Add run ID prefix to tailscale container names
- dsic: Add run ID prefix to DERP container names
- scenario: Use run ID-aware test suite container name for network setup
Container naming now follows: {type}-{runIDShort}-{identifier}-{hash}
Example: ts-mdjtzx-1-74-fgdyls, hs-mdjtzx-pingallbyip-abc123
The run ID is obtained from HEADSCALE_INTEGRATION_RUN_ID environment
variable via dockertestutil.GetIntegrationRunID().
