Minor cleanup in some of the shell scripts in the "tools" directory.
No functional changes.

 * Description header formatting
 * Added missing new line at the end of a file
 * Removed extra new lines at the end of a file
diff --git a/tools/build/onos-test b/tools/build/onos-test
index 1526e1b..740e370 100755
--- a/tools/build/onos-test
+++ b/tools/build/onos-test
@@ -1,7 +1,7 @@
 #!/bin/bash
-#-------------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
 # Launches the ONOS tests on the current cell environment.
-#-------------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
 
 [ ! -d "$ONOS_ROOT" ] && echo "ONOS_ROOT is not defined" >&2 && exit 1
 . $ONOS_ROOT/tools/build/envDefaults