tools/valgrind: add new suppression rules

tools/valgrind/fscanf.suppr

@@ -7,3 +7,13 @@
    fun:fscanf
    fun:scan_reg_model
 }
+
+{
+   fprintf error
+   Memcheck:Cond
+   ...
+   fun:vfprintf
+   fun:buffered_vfprintf
+   fun:vfprintf
+   fun:fprintf
+}

tools/valgrind/openmpi.suppr

@@ -103,3 +103,14 @@
    ...
    fun:PMPI_Init_thread
 }
+
+{
+   suppr15
+   Memcheck:Leak
+   fun:malloc
+   fun:ompi_free_list_grow
+   ...
+   fun:opal_progress
+   fun:ompi_request_default_test
+   fun:PMPI_Test
+}