Add CtsNetTestCase as presubmit for automotive multi-user multi-display

This changelist adds a new presubmit entry to be used to trigger this test module on automotive target with visible background user enabled (multi-user multi-display targets).

Bug: 374372313
Test: m
Change-Id: I3de5d9660cf472df0011e920c674da0e2895ef39
1 file changed