Extra builds using multiple execution servers

On https://github.com/albfan/jbpm-wb/tree/build-optimization

It checs the serverInstance.getServerTemplateId() to control if build artifacts is needed:

to reduce "x" kjar deployment from:

n kie servers = n * x builds

to

n kie servers = 1 * x builds

Probably some corner cases are uncovered (if template changes between new execution servers are added.

We need to identify if this (with any other coverage is a valid performance optimization)

For templates with lot of kjar to deploy it can end if OOM