Update make lint to cope with latest changes made in build-tools.

Makefile

@@ -214,7 +214,7 @@ tests:
 	./tools/test -no-go-get -netgo -timeout 8m
 
 lint:
-	./tools/lint -nocomment -notestpackage .
+	./tools/lint -nocomment -notestpackage
 
 endif
 

build/Dockerfile

@@ -46,6 +46,7 @@ RUN go get \
 	github.com/golang/lint/golint \
 	github.com/fzipp/gocyclo \
 	gopkg.in/mvdan/sh.v1/cmd/shfmt \
+	github.com/fatih/hclfmt \
 	github.com/client9/misspell/cmd/misspell
 
 # First clean, because we're gonna rebuild the std both with -race enabled and disabled