go 1.14 rebuild

PKGBUILD

@@ -2,7 +2,7 @@
 
 pkgname=prometheus-blackbox-exporter
 pkgver=0.16.0
-pkgrel=2
+pkgrel=3
 pkgdesc="Allows blackbox probing of endpoints over HTTP, HTTPS, DNS, TCP and ICMP"
 arch=('x86_64')
 url="https://github.com/prometheus/blackbox_exporter"
@@ -21,6 +21,7 @@ check() {
 build() {
   cd blackbox_exporter-$pkgver
   go build \
+    -mod=vendor \
     -gcflags "all=-trimpath=${PWD}" \
     -asmflags "all=-trimpath=${PWD}" \
     -ldflags "-extldflags ${LDFLAGS} \