Ensure proper gofail package version in robustness tests

Signed-off-by: Marek Siarkowicz <[email protected]>

tests/robustness/makefile.mk

@@ -101,6 +101,7 @@ $(GOPATH)/bin/gofail: tools/mod/go.mod tools/mod/go.sum
 	  (cd server; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
 	  (cd etcdctl; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
 	  (cd etcdutl; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
+	  (cd tools/mod; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
 	  FAILPOINTS=true ./build;
 
 /tmp/etcd-v3.5.12-beforeSendWatchResponse/bin: $(GOPATH)/bin/gofail
@@ -124,9 +125,7 @@ $(GOPATH)/bin/gofail: tools/mod/go.mod tools/mod/go.sum
 	cd /tmp/etcd-release-3.5-failpoints/; \
 	  git clone --depth 1 --branch release-3.5 https://github.com/etcd-io/etcd.git .; \
 	  go get go.etcd.io/gofail@${GOFAIL_VERSION}; \
-	  (cd server; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
-	  (cd etcdctl; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
-	  (cd etcdutl; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
+	  (cd tools/mod; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
 	  FAILPOINTS=true ./build;
 
 /tmp/etcd-v3.4.23-failpoints/bin:
@@ -136,6 +135,7 @@ $(GOPATH)/bin/gofail: tools/mod/go.mod tools/mod/go.sum
 	cd /tmp/etcd-v3.4.$*-failpoints/; \
 	  git clone --depth 1 --branch v3.4.$* https://github.com/etcd-io/etcd.git .; \
 	  go get go.etcd.io/gofail@${GOFAIL_VERSION}; \
+	  (cd tools/mod; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
 	  FAILPOINTS=true ./build;
 
 /tmp/etcd-release-3.4-failpoints/bin: $(GOPATH)/bin/gofail
@@ -144,4 +144,5 @@ $(GOPATH)/bin/gofail: tools/mod/go.mod tools/mod/go.sum
 	cd /tmp/etcd-release-3.4-failpoints/; \
 	  git clone --depth 1 --branch release-3.4 https://github.com/etcd-io/etcd.git .; \
 	  go get go.etcd.io/gofail@${GOFAIL_VERSION}; \
+	  (cd tools/mod; go get go.etcd.io/gofail@${GOFAIL_VERSION}); \
 	  FAILPOINTS=true ./build;