add new features to ios shared module

* add load_config() for loading a set of configuration commands
* add load_candidate() function for loading a candidate config
* updates shared module to provide NetworKModule instead of get_module
* fixes Cli transport implementation for 2.2 refactor
* updates ios documentation fragments with new options

lib/ansible/utils/module_docs_fragments/ios.py

@@ -89,5 +89,33 @@ options:
         met either by individual arguments or values in this dict.
     required: false
     default: null
-
+  force:
+    description:
+      - The force argument instructs the module to not consider the
+        current devices running-config.  When set to true, this will
+        cause the module to push the contents of I(src) into the device
+        without first checking if already configured.
+    required: false
+    default: false
+    choices: ['yes', 'no']
+  running_config:
+    description:
+      - The module, by default, will connect to the remote device and
+        retrieve the current running-config to use as a base for comparing
+        against the contents of source.  There are times when it is not
+        desirable to have the task get the current running-config for
+        every task in a playbook.  The I(config) argument allows the
+        implementer to pass in the configuruation to use as the base
+        config for comparision.
+    required: false
+    default: null
+    aliases: ['config']
+  save_config:
+    description:
+      - Specifies the current C(running-config) should be saved to
+        non-volatile memory so that configuration changes are
+        persistent if the device is restarted.
+    required: false
+    default: null
+    aliases: ['save']
 """