Make generated pkg meta more similar to existing

This often avoids making an API call to the server completely, if the
generated XML can be shown to be the same as the existing.
2 jobs for obs-api in 13 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #1040516
job-flake8-2

00:00:13

passed #1040517
job-flake8-3

00:00:13