minor fix to regular expression replacement in ref files

Det/DetCond/tests/refs/begin_event_no_reserve.ref

@@ -2,7 +2,7 @@ ApplicationMgr    SUCCESS
 ====================================================================================================================================
 ====================================================================================================================================
 ApplicationMgr       INFO Application Manager Configured successfully
-ToolSvc.GitDDDB      INFO using checked out files in /...
/test/TESTCOND
+ToolSvc.GitDDDB      INFO using checked out files in /.../Det/DetCond/test/TESTCOND
 DetectorPersist...   INFO Added successfully Conversion service:XmlCnvSvc
 DetectorDataSvc   SUCCESS Detector description database: git:/lhcb.xml
 EventClockSvc.E...   INFO Event times generated from 1442403000000000000 with steps of 18399600000000000

Det/DetCond/tests/refs/detdesc_cond_as_yaml.ref

@@ -2,7 +2,7 @@ ApplicationMgr    SUCCESS
 ====================================================================================================================================
 ====================================================================================================================================
 ApplicationMgr       INFO Application Manager Configured successfully
-ToolSvc.GitDDDB      INFO using checked out files in /...
/test/TESTCOND
+ToolSvc.GitDDDB      INFO using checked out files in /.../Det/DetCond/test/TESTCOND
 DetectorPersist...   INFO Added successfully Conversion service:XmlCnvSvc
 DetectorDataSvc   SUCCESS Detector description database: git:/lhcb.xml
 EventClockSvc.E...   INFO Event times generated from 1442403000000000000 with steps of 18399600000000000

GaudiConf/python/GaudiConf/QMTest/LHCbExclusions.py

@@ -19,8 +19,8 @@ gitCondDBFixes = (RegexpReplacer(
                       'INFO opening Git repository', 'INFO using commit'
                   ]) + RegexpReplacer(
                       when='using checked out files',
-                      orig='/[^ ]*(/Det/DetCond)',
-                      repl='/...\1'))
+                      orig=r'/[^ ]*(/Det/DetCond)',
+                      repl=r'/...\1'))
 
 preprocessor = (
     normalizeExamples + normalizeEOL +  # workaround for gaudi/Gaudi#108