Add workflow node identifier

Generate new modules WFJT and WFJT node
Touch up generated syntax, test new modules

Add utility method in awxkit

Fix some issues with non-name identifier in
  AWX collection module_utils

Update workflow docs for workflow node identifier

Test and fix WFJT modules survey_spec
Plug in survey spec for the new module
Handle survey spec idempotency and test

add associations for node connections
Handle node credential prompts as well

Add indexes for new identifier field

Test with unicode dragon in name

awx/main/utils/named_url_graph.py

@@ -77,6 +77,8 @@ class GraphNode(object):
         Performance assured: http://stackoverflow.com/a/27086669
         '''
         for c in URL_PATH_RESERVED_CHARSET:
+            if not isinstance(text, str):
+                text = str(text)  # needed for WFJT node creation, identifier temporarily UUID4 type
             if c in text:
                 text = text.replace(c, URL_PATH_RESERVED_CHARSET[c])
         text = text.replace(NAMED_URL_RES_INNER_DILIMITER,
@@ -200,14 +202,14 @@ def _get_all_unique_togethers(model):
 
 
 def _check_unique_together_fields(model, ut):
-    has_name = False
+    name_field = None
     fk_names = []
     fields = []
     is_valid = True
     for field_name in ut:
         field = model._meta.get_field(field_name)
-        if field_name == 'name':
-            has_name = True
+        if field_name in ('name', 'identifier'):
+            name_field = field_name
         elif type(field) == models.ForeignKey and field.related_model != model:
             fk_names.append(field_name)
         elif issubclass(type(field), models.CharField) and field.choices:
@@ -219,8 +221,8 @@ def _check_unique_together_fields(model, ut):
         return (), (), is_valid
     fk_names.sort()
     fields.sort(reverse=True)
-    if has_name:
-        fields.append('name')
+    if name_field:
+        fields.append(name_field)
     fields.reverse()
     return tuple(fk_names), tuple(fields), is_valid