Primary development of inventory plugins, partial compat layer

Initialize some inventory plugin test data files
Implement openstack inventory plugin

This may be removed later:
- port non-JSON line strip method from core

Dupliate effort with AWX mainline devel
- Produce ansible_version related to venv

Refactor some of injector management, moving more
  of this overhead into tasks.py, when it comes to
  managing injector kwargs

Upgrade and move openstack inventory script
  sync up parameters

Add extremely detailed logic to inventory file creation
for ec2, Azure, and gce so that they are closer to a
genuine superset of what the contrib script used to give.

awx/plugins/inventory/openstack_inventory.py

@@ -57,15 +57,13 @@ import os
 import sys
 import time
 from distutils.version import StrictVersion
+from io import StringIO
 
-try:
-    import json
-except:
-    import simplejson as json
+import json
 
-import os_client_config
-import shade
-import shade.inventory
+import openstack as sdk
+from openstack.cloud import inventory as sdk_inventory
+from openstack.config import loader as cloud_config
 
 CONFIG_FILES = ['/etc/ansible/openstack.yaml', '/etc/ansible/openstack.yml']
 
@@ -149,7 +147,7 @@ def get_host_groups_from_cloud(inventory):
     if hasattr(inventory, 'extra_config'):
         use_hostnames = inventory.extra_config['use_hostnames']
         list_args['expand'] = inventory.extra_config['expand_hostvars']
-        if StrictVersion(shade.__version__) >= StrictVersion("1.6.0"):
+        if StrictVersion(sdk.version.__version__) >= StrictVersion("0.13.0"):
             list_args['fail_on_cloud_config'] = \
                 inventory.extra_config['fail_on_errors']
     else:
@@ -192,8 +190,13 @@ def is_cache_stale(cache_file, cache_expiration_time, refresh=False):
 
 
 def get_cache_settings(cloud=None):
-    config = os_client_config.config.OpenStackConfig(
-        config_files=os_client_config.config.CONFIG_FILES + CONFIG_FILES)
+    config_files = cloud_config.CONFIG_FILES + CONFIG_FILES
+    if cloud:
+        config = cloud_config.OpenStackConfig(
+            config_files=config_files).get_one(cloud=cloud)
+    else:
+        config = cloud_config.OpenStackConfig(
+            config_files=config_files).get_all()[0]
     # For inventory-wide caching
     cache_expiration_time = config.get_cache_expiration_time()
     cache_path = config.get_cache_path()
@@ -231,15 +234,17 @@ def parse_args():
 def main():
     args = parse_args()
     try:
-        config_files = os_client_config.config.CONFIG_FILES + CONFIG_FILES
-        shade.simple_logging(debug=args.debug)
+        # openstacksdk library may write to stdout, so redirect this
+        sys.stdout = StringIO()
+        config_files = cloud_config.CONFIG_FILES + CONFIG_FILES
+        sdk.enable_logging(debug=args.debug)
         inventory_args = dict(
             refresh=args.refresh,
             config_files=config_files,
             private=args.private,
             cloud=args.cloud,
         )
-        if hasattr(shade.inventory.OpenStackInventory, 'extra_config'):
+        if hasattr(sdk_inventory.OpenStackInventory, 'extra_config'):
             inventory_args.update(dict(
                 config_key='ansible',
                 config_defaults={
@@ -249,14 +254,15 @@ def main():
                 }
             ))
 
-        inventory = shade.inventory.OpenStackInventory(**inventory_args)
+        inventory = sdk_inventory.OpenStackInventory(**inventory_args)
 
+        sys.stdout = sys.__stdout__
         if args.list:
             output = get_host_groups(inventory, refresh=args.refresh, cloud=args.cloud)
         elif args.host:
             output = to_json(inventory.get_host(args.host))
         print(output)
-    except shade.OpenStackCloudException as e:
+    except sdk.exceptions.OpenStackCloudException as e:
         sys.stderr.write('%s\n' % e.message)
         sys.exit(1)
     sys.exit(0)