Rename CI build hosts so that hw genaration can be recognized from the name

Currently CI build host follow a naming convention like "full-tomcat".
This makes it difficult to recognize the hardware generation of the server.
There has been cases where certain generations have caused problems, and it has been hard to spot.

Suggestion is that all the hardwares that are similar should start with the same letter or same adjective. 1st generation should start with 'a', second with 'b'" and so on. If there is completely different architecture like arm, letters can start from different point in alphabet. Having different amount of memory or cpu clock speed, qualifies as a different generation.