Merge branch 'ship_with_jaeger_by_default' into 'master'

Statically link jaeger into Workhorse by default

See merge request gitlab-org/gitlab-workhorse!359

Makefile

@@ -14,6 +14,7 @@ VERSION := ${VERSION_STRING}-$(shell date -u +%Y%m%d.%H%M%S)
 GOBUILD := go build -ldflags "-X main.Version=$(VERSION)"
 EXE_ALL := gitlab-zip-cat gitlab-zip-metadata gitlab-workhorse
 INSTALL := install
+BUILD_TAGS := tracer_static tracer_static_jaeger
 
 MINIMUM_SUPPORTED_GO_VERSION := 1.8