[Sample data] Add non time based sample data set

[timroes]

All our sample data sets are currently using a time-based index pattern. We often come across issues or features not behaving very well with non time-based index patterns. This might be, due to the fact, that most developers use the sample data sets during development. I think we should add a sample data set, that isn't using a time field, so that there is an easy way to test against those data.

I've no special suggestions about the content of the dataset, so every suggestion welcome.

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[myasonik]

Just throwing out some ideas:

• A library, catalogue, or inventory of product (anonymized employee data could be interesting)
• Could use various data sets from numbeo (yes, you could graph all of this stuff over time, but a snapshot of data would be just as good of a data set) (saving you a click, it's stuff like cost of living data, transportation data, property prices, crime, etc for all over the world)
• Relationship between soil composition and properties of plants (can extend this idea to anything that is "state" to "result of state" data sets)
• Periodic table of elements

[elasticmachine]

Pinging @elastic/kibana-core-ui (Team:Core UI)