Makefile: clean go build cache (#17079)

Makefile

@@ -41,6 +41,7 @@ lint: ## Run linters.
 	build/env.sh go run build/ci.go lint
 
 clean:
+	./build/clean_go_build_cache.sh
 	rm -fr build/_workspace/pkg/ $(GOBIN)/*
 
 # The devtools target installs tools required for 'go generate'.

build/clean_go_build_cache.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+function version_gt() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1"; }
+
+golang_version=$(go version |cut -d' ' -f3 |sed 's/go//')
+
+# Clean go build cache when go version is greater than or equal to 1.10
+if !(version_gt 1.10 $golang_version); then
+    go clean -cache
+fi