[nancy/grcinq] Add grcinq in testing queue

rake gen:oar-properties SITE=nancy CLUSTER=grcinq DO=diff

Output format: [ '-', 'key', 'value'] for missing, [ '+', 'key', 'value'] for added, ['~', 'key', 'old value', 'new value'] for changed
   grcinq-1:
     ["~", "maintenance", "NO", "YES"]
     ["~", "production", "YES", "NO"]
   grcinq-2: same modifications as above
 ...