Update scr command in onos-diag for Karaf 4.x

Change-Id: I9652da403cf094777aaafa661c5265c3b3278c14
diff --git a/tools/package/runtime/bin/onos-diagnostics b/tools/package/runtime/bin/onos-diagnostics
index 39d2c06..4120b8f 100755
--- a/tools/package/runtime/bin/onos-diagnostics
+++ b/tools/package/runtime/bin/onos-diagnostics
@@ -61,7 +61,7 @@
     "feature:repo-list"
     "feature:list"
     "bundle:list"
-    "scr:list"
+    "scr-list"
 
     "summary"
     "nodes"