hcoll belongs to MLNX and is active

ompi/mca/coll/hcoll/owner.txt

@@ -3,5 +3,5 @@
 # owner: institution that is responsible for this package
 # status: e.g. active, maintenance, unmaintained
 #
-owner: ?
+owner: MELLANOX
-status: unmaintained
+status: active