Adds a node attribute to all test runs and uses the attribute to test
`_cat/nodeattrs`.
Note that its quite possible create an impressively slow regex while doing
this and you have to be careful. See comment in commit for more if curious.
Closes#12558
We had a file in dev-tools/ElasticSearch.launch which tried to launch
elasticsearch but failed somewhat epically because of the security manager
and files having moved. This recreates it with
`-Des.security.manager.enabled=false` to get it working again. Its not as nice
as testing with the security manager in place but its better than waiting
minutes for maven to package and startup elasticsearch.