Fix Use grep instead of find and file to check CRLF in stage-test.sh

Change-Id: Ia718640808d9466f7abf0f5759a6d36a2a3b1f00
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/Jenkinsfile.new b/Jenkinsfile.new
index 9e15266..e4d313a 100644
--- a/Jenkinsfile.new
+++ b/Jenkinsfile.new
@@ -35,7 +35,7 @@
     booleanParam(name: 'DO_INSTALL', defaultValue: true, description: '')
     booleanParam(name: 'DO_DOCKERPUSH', defaultValue: true, description: '')
     booleanParam(name: 'DO_ROBOT', defaultValue: true, description: '')
-    
+
     // Module configuration
     string(name: 'MODULE_NAME', defaultValue: 'tests', description: 'Name of the module under test')
     string(name: 'IMAGENAME', defaultValue: 'opensourcemano/tests', description: 'Image name for publish')