Adds 'ansible_check_mode' boolean magic variable

* Makes it possible to pass any options variable to VariableManager
  by changing `load_options_vars(options)` in `lib/ansible/utils/vars.py`

lib/ansible/cli/adhoc.py

@@ -32,6 +32,7 @@ from ansible.parsing.splitter import parse_kv
 from ansible.playbook.play import Play
 from ansible.plugins import get_all_plugin_loaders
 from ansible.utils.vars import load_extra_vars
+from ansible.utils.vars import load_options_vars
 from ansible.utils.unicode import to_unicode
 from ansible.vars import VariableManager
 
@@ -123,6 +124,8 @@ class AdHocCLI(CLI):
         variable_manager = VariableManager()
         variable_manager.extra_vars = load_extra_vars(loader=loader, options=self.options)
 
+        variable_manager.options_vars = load_options_vars(self.options)
+
         inventory = Inventory(loader=loader, variable_manager=variable_manager, host_list=self.options.inventory)
         variable_manager.set_inventory(inventory)
 

lib/ansible/cli/playbook.py

@@ -33,6 +33,7 @@ from ansible.parsing.dataloader import DataLoader
 from ansible.playbook.block import Block
 from ansible.playbook.play_context import PlayContext
 from ansible.utils.vars import load_extra_vars
+from ansible.utils.vars import load_options_vars
 from ansible.vars import VariableManager
 
 try:
@@ -125,6 +126,8 @@ class PlaybookCLI(CLI):
         variable_manager = VariableManager()
         variable_manager.extra_vars = load_extra_vars(loader=loader, options=self.options)
 
+        variable_manager.options_vars = load_options_vars(self.options)
+
         # create the inventory, and filter it based on the subset specified (if any)
         inventory = Inventory(loader=loader, variable_manager=variable_manager, host_list=self.options.inventory)
         variable_manager.set_inventory(inventory)