patch for #3649 which doesn't require #!/bin/bash at the top of the bash script

test/test_rosdep/test/yaml_script.yaml

@@ -1,9 +1,7 @@
 return0: 
   rosdep_test_os: |
-    #!/bin/bash
     exit 0
 
 return1:
   rosdep_test_os: |
-    #!/bin/bash
     exit 1

tools/rosdep/src/rosdep/core.py

@@ -498,7 +498,7 @@ class Rosdep:
                 
             # Detect a script and execute it if desired
             if len(rosdep_dict.split('\n')) > 1:
-                return create_tempfile_from_string_and_execute(rosdep_dict)
+                return create_tempfile_from_string_and_execute("#!/bin/bash\n"+rosdep_dict)
 
             installer = self.osi.get_os().get_installer('default')
             packages = rosdep_dict.split()