… values (elastic#44718)

## Summary

Updates the fields within the source/destination feature tooltips to show the following (elastic#44493):
  * `host.name` 
  * `source/destination.ip` 
  * `source/destination.domain` 
  * `source/destination.as.organization.name` 

![image](https://user-images.githubusercontent.com/2946766/64210040-6bf5da00-ce5f-11e9-9331-0ab98aaefd35.png)

Fixes filtering on undefined field values (elastic#44711)

![maps_filtering_fix](https://user-images.githubusercontent.com/2946766/64210200-dc9cf680-ce5f-11e9-8e51-5b87588569be.gif)


Use ~~strikethroughs~~ to remove checklist items you don't feel are applicable to this PR.

- [ ] ~This was checked for cross-browser compatibility, [including a check against IE11](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#cross-browser-compatibility)~
- [ ] ~Any text added follows [EUI's writing guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses sentence case text and includes [i18n support](https://github.com/elastic/kibana/blob/master/packages/kbn-i18n/README.md)~
- [ ] ~[Documentation](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#writing-documentation) was added for features that require explanation or tutorials~
- [X] [Unit or functional tests](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#cross-browser-compatibility) were updated or added to match the most common scenarios
- [ ] ~This was checked for [keyboard-only and screenreader accessibility](https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Cross_browser_testing/Accessibility#Accessibility_testing_checklist)~

### For maintainers

- [ ] ~This was checked for breaking API changes and was [labeled appropriately](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#release-notes-process)~
- [ ] ~This includes a feature addition or change that requires a release note and was [labeled appropriately](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#release-notes-process)~