tech(build): add build grafana-server and cli to CI

scripts/circle-test.sh

@@ -25,5 +25,9 @@ exit_if_fail npm run coveralls
 
 test -z "$(gofmt -s -l ./pkg/... | tee /dev/stderr)"
 
+exit_if_fail go run build.go build
+
 exit_if_fail go vet ./pkg/...
 exit_if_fail go test -v ./pkg/...
+
+