Fixup dotest.py after the configuration package introduction

llvm-svn: 255009
diff --git a/lldb/packages/Python/lldbsuite/test/dotest.py b/lldb/packages/Python/lldbsuite/test/dotest.py
index 8f5d0da..318f2d2 100644
--- a/lldb/packages/Python/lldbsuite/test/dotest.py
+++ b/lldb/packages/Python/lldbsuite/test/dotest.py
@@ -1350,7 +1350,7 @@
 
             # First, write out the number of collected test cases.
             if not configuration.parsable:
-                sys.stderr.write(separator + "\n")
+                sys.stderr.write(configuration.separator + "\n")
                 sys.stderr.write("Collected %d test%s\n\n"
                                  % (configuration.suite.countTestCases(),
                                     configuration.suite.countTestCases() != 1 and "s" or ""))