TCP: Set read priority to low

PRIORITY_DEFAULT is used for example for X Server events or other UI
tasks. This should help to prefer UI events before network events.
2 jobs for master in 29 seconds (queued for 4 seconds)
Name Stage Failure
run-test Test
Your code has been rated at 9.91/10

Uploading artifacts for failed job
Uploading artifacts...
WARNING: coverage.xml: no matching files
ERROR: No files to upload
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1