[456351] Make SemanticResourceURIInAirdTests more reliable

Explicitly add semantic resources rather than using genericSetUp.
Add explicit save.
Add test on resourceDescriptor URI

Bug: 456351
Change-Id: I3bce6ffb60188d3763528154d0f3fe328647433e
Signed-off-by: Laurent Fasani <laurent.fasani@obeo.fr>
1 file changed