Update backend Makefile to run go tests when make build is called.
Update backend Makefile to run go tests when make build is called.

This is the simplest change with the current setup which calls the
test directive from the buld directive which is triggered on
travis runs.

Wintermute1/hashi-ui,iverberk/nomad-ui,jippi/hashi-ui,maytechnet/nomad-ui,Wintermute1/hashi-ui,jippi/hashi-ui,Wintermute1/hashi-ui,iverberk/nomad-ui,maytechnet/nomad-ui,maytechnet/nomad-ui,iverberk/nomad-ui,maytechnet/nomad-ui,jippi/hashi-ui,Wintermute1/hashi-ui