Revert "ERP5TypeTestSuite: Rely on a suffix rather on the full name"

This reverts commit e4d94867.

product/ERP5Type/tests/ERP5TypeTestSuite.py

@@ -52,7 +52,7 @@ class ERP5TypeTestSuite(TestSuite):
       args = ("--firefox_bin=%s" % firefox_bin,) + args
     if xvfb_bin:
       args = ("--xvfb_bin=%s" % xvfb_bin,) + args
-    if 'UpgradeInstanceWithOldDataFs' in args:
+    if 'testUpgradeInstanceWithOldDataFs' in args:
       # our reference Data.fs uses `CONNECTION_STRING_REPLACED_BY_TEST_INIT_______________________________`
       # as a connection string. Before we start, replace this by the connection string
       # that this test node is using.