In some cases, where a host is mentioned in multiple groups, and those
groups are referenced in multiple ini files, a group could still contain
multiple instances of a group in its host,groups list, where only one of them
is the right group, that exists in the inventory.
If something is executable but doesn't look like it should be, or if
something is NOT executable and DOES looks like it should, show a
more apropos error with a hint on correcting the problem
Fixes#5113
Make sure all hosts and groups are unique objects
and that those are referenced uniquely everywhere.
Also fixes test_dir_inventory unit tests which were broken after previous
patches.
modified: lib/ansible/inventory/dir.py
Fixes a bug where vault_password parameter was not passed through in
_load_vars_from_folder()
modified: lib/ansible/inventory/vars_plugins/group_vars.py
0. Uncomment the test.
1. Test fails.
2. Make vars unique per file in test inventory files.
3. Modify token addition to not ast.literal_eval(v) a variable containing a hash.
4. Modify vars to have an escape in test inventory file.
5. Catch exceptions explicitly. Any unknown exceptions should be a bug.
6. Test passes.
It came up that fixing this unit test may relate to another ticket that is open. This work allows us to uncomment this unit test by fixing how we pars variables allowing a quoted variable to contain a '#'.
Work also went into cleaning up some of the test data to clarify what was working.
Lastly work went into cleaning up formatting so that the code is easily read.
As part of 94f3b9bfab the code was changed to support dynamically adding localhost to the inventory. This change introduced an crash when run via ansible-pull
```
Starting ansible-pull at 2014-01-20 23:09:57
Traceback (most recent call last):
File "/tmp/ansible/bin/ansible", line 157, in <module>
(runner, results) = cli.run(options, args)
File "/tmp/ansible/bin/ansible", line 82, in run
hosts = inventory_manager.list_hosts(pattern)
File "/tmp/ansible/lib/ansible/inventory/__init__.py", line 372, in list_hosts
result = [ h.name for h in self.get_hosts(pattern) ]
File "/tmp/ansible/lib/ansible/inventory/__init__.py", line 136, in get_hosts
subset = self._get_hosts(self._subset)
File "/tmp/ansible/lib/ansible/inventory/__init__.py", line 177, in _get_hosts
that = self.__get_hosts(p)
File "/tmp/ansible/lib/ansible/inventory/__init__.py", line 198, in __get_hosts
hpat = self._hosts_in_unenumerated_pattern(name)
File "/tmp/ansible/lib/ansible/inventory/__init__.py", line 275, in _hosts_in_unenumerated_pattern
ungrouped.add_host(new_host)
AttributeError: 'NoneType' object has no attribute 'add_host'
```
The root cause is there is no group for the host to be added to. I fixed this case by creating the ungrouped group when it doesn't exist and then adding the host to the newly added group. This fixes the regression for me.
