Merge pull request #601 from rphillips/add_prefix

add prefix to Makefile

Author: rphillips

Diff for: Makefile

@@ -8,6 +8,7 @@ GOTOOLS_GOPATH ?= $(BUILD_DIR)/gotools
 GOTOOLS_BINDIR ?= $(GOTOOLS_GOPATH)/bin
 GINKGO_FLAGS ?= -vv --trace --race --randomize-all --flake-attempts 3 --progress --timeout 5m -r pkg/client
 PACKAGE_NAME ?= $(shell cargo metadata --no-deps --format-version 1 | jq -r '.packages[2] | [ .name, .version ] | join("-")')
+PREFIX ?= /usr
 CI_TAG ?=
 
 default: