refactors nios api shared code to handle provider better (#35393)

* refactors nios api shared code to handle provider better

This change refactors the shared code to be easily shared between
modules, plugins and dynamic inventory scripts.  All parts now implement
the provider arguments uniformly.

This also provides a centralized fix to suppress urllib3 warnings coming
from the requests library implemented by infoblox_client

* fix up pep8 errors

* fix missing var name

contrib/inventory/infoblox.py

@@ -25,18 +25,9 @@ import argparse
 from ansible.parsing.dataloader import DataLoader
 from ansible.module_utils.six import iteritems
 from ansible.module_utils._text import to_text
-from ansible.module_utils.net_tools.nios.api import get_connector
+from ansible.module_utils.net_tools.nios.api import WapiInventory
 from ansible.module_utils.net_tools.nios.api import normalize_extattrs, flatten_extattrs
 
-try:
-    # disable urllib3 warnings so as to not interfere with printing to stdout
-    # which is read by ansible
-    import urllib3
-    urllib3.disable_warnings()
-except ImportError:
-    sys.stdout.write('missing required library: urllib3\n')
-    sys.exit(-1)
-
 
 CONFIG_FILES = [
     '/etc/ansible/infoblox.yaml',
@@ -70,7 +61,7 @@ def main():
         loader = DataLoader()
         config = loader.load_from_file(config_file)
         provider = config.get('provider') or {}
-        connector = get_connector(**provider)
+        wapi = WapiInventory(provider)
     except Exception as exc:
         sys.stdout.write(to_text(exc))
         sys.exit(-1)
@@ -99,10 +90,10 @@ def main():
 
     return_fields = ['name', 'view', 'extattrs', 'ipv4addrs']
 
-    hosts = connector.get_object('record:host',
-                                 host_filter,
-                                 extattrs=extattrs,
-                                 return_fields=return_fields)
+    hosts = wapi.get_object('record:host',
+                            host_filter,
+                            extattrs=extattrs,
+                            return_fields=return_fields)
 
     if hosts:
         for item in hosts: