[refactor] use the new downstream nrm API

The ci setup was also changed to better isolate library building
from integration tests.
3 jobs for master in 26 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #16438
integration
libnrm.build

00:00:13

 
  Test
passed #16439
integration
helloworld.integration.test

00:00:06

passed #16440
integration
perfwrapper.integration.test

00:00:06