* Resolve hosts for fritzbox_callmonitor
If the configuration supplied "host" is not an IP address, try resolving it
* always use gethostbyname
Instead of just checking whether it is an IP and if it isn't try to resolve; just resolve it; IPs will be returned unchanged, and hostnames will be resolved.
* Catch error if the hostname cannot be resolved
* Don't fallback to default host
If the hostname cannot be resolved; don't try to fallback; just print the error message.
* Fail setup if hostname cannot be resolved
If the hostname cannot be resolved, log an error and stop the setup;
no entities will be then created.
* Consolidate
* Fix tests
* Update imports
* Fix import
* Use importlib because integration and package share name
* Fix more tests
* Update .coveragerc and CODEOWNERS