chore(*): update confd to v0.10.0

See https://github.com/kelseyhightower/confd/releases/tag/v0.10.0

Author: mboersma

Dockerfile

@@ -10,7 +10,7 @@ RUN curl -sSL -o /usr/local/bin/etcdctl https://s3-us-west-2.amazonaws.com/get-d
     && chmod +x /usr/local/bin/etcdctl
 
 # install confd
-RUN curl -sSL -o /usr/local/bin/confd https://github.com/kelseyhightower/confd/releases/download/v0.9.0/confd-0.9.0-linux-amd64 \
+RUN curl -sSL -o /usr/local/bin/confd https://github.com/kelseyhightower/confd/releases/download/v0.10.0/confd-0.10.0-linux-amd64 \
     && chmod +x /usr/local/bin/confd
 
 # define execution environment