Determine admin better

I need to check cases like a Resource of `['*']` by fixing https://github.com/duo-labs/cloudmapper/blob/07c29f09d966605e04eda37a38a0adf85717a8c5/commands/find_admins.py#L62 to use something like:
```
def is_resource_any(resource):
if resource == '*':
return True
if isinstance(resource, list) and len(resource) == 1 and resource[0] == '*':
return True

return False
```

Really, I need to use Zelkova or something smarter for all this.