use shutil instead of distutils to find executable

To find if we have to use the dinghy compose file or the normal compose
file we now use shutil to find if dinghy is installed.

Signed-off-by: BlackEagle <[email protected]>

Author: BlackIkeEagle

bin/environment.py

@@ -7,7 +7,7 @@
 import contextlib
 import codecs
 import re
-from distutils.spawn import find_executable
+import shutil
 
 
 def split_env(env):
@@ -51,7 +51,7 @@ def __check_environment(self):
                 raise ValueError("Env does not contain %s" % requiredkey)
 
     def get_compose_filename(self):
-        dingyexec = find_executable('dinghy')
+        dingyexec = shutil.which('dinghy')
         if None is not dingyexec:
             return 'docker-compose-dinghy.yml'
         return 'docker-compose.yml'