Make using named pipe for adding passwords conditional on the version

of ssh used.

awx/main/utils.py

@@ -27,7 +27,7 @@ from Crypto.Cipher import AES
 logger = logging.getLogger('awx.main.utils')
 
 __all__ = ['get_object_or_400', 'get_object_or_403', 'camelcase_to_underscore',
-           'get_ansible_version', 'get_awx_version', 'update_scm_url',
+           'get_ansible_version', 'get_ssh_version', 'get_awx_version', 'update_scm_url',
            'get_type_for_model', 'get_model_for_type', 'to_python_boolean',
            'ignore_inventory_computed_fields', 'ignore_inventory_group_removal',
            '_inventory_updates', 'get_pk_from_dict']
@@ -104,6 +104,17 @@ def get_ansible_version():
     except:
         return 'unknown'
 
+def get_ssh_version():
+    '''
+    Return SSH version installed.
+    '''
+    try:
+        proc = subprocess.Popen(['ssh', '-V'],
+                                stderr=subprocess.PIPE)
+        result = proc.communicate()[1]
+        return result.split(" ")[0].split("_")[1]
+    except:
+        return 'unknown'
 
 def get_awx_version():
     '''