Bump template to of-watchdog 0.4.0

Signed-off-by: Martin Dekov (VMware) <[email protected]>

Author: Martin Dekov (VMware)

template/golang-http/Dockerfile

@@ -3,7 +3,7 @@ FROM golang:1.9.2-alpine3.6
 # Alternatively use ADD https:// (which will not be cached by Docker builder)
 RUN apk --no-cache add curl \
     && echo "Pulling watchdog binary from Github." \
-    && curl -sSLf https://github.com/openfaas-incubator/of-watchdog/releases/download/0.2.1/of-watchdog > /usr/bin/fwatchdog \
+    && curl -sSLf https://github.com/openfaas-incubator/of-watchdog/releases/download/0.4.0/of-watchdog > /usr/bin/fwatchdog \
     && chmod +x /usr/bin/fwatchdog \
     && apk del curl --no-cache