Updates mongo-tools git ref to skip failing tests

SOURCES/modulemd.src.txt

@@ -90,7 +90,7 @@ data:
         buildorder: 2
       mongo-tools:
         rationale: MongoDB tools provides import, export, and diagnostic capabilities.
-        ref: changed/i8c-stream-3.6/mongo-tools-3.6.6-1.module_el8.0.0+31+fdc76a87
+        ref: changed/i8-stream-3.6/mongo-tools-3.6.6-1.module_el8.0.0+31+fdc76a87.inferit
       mongodb:
         rationale: MongoDB package.
         ref: changed/i8c-stream-3.6/mongodb-3.6.8-1.module_el8.0.0+31+fdc76a87