Fix k8s replica set deployment (#8629)

In replica sets, hosts resolve to localhost
IP automatically until the deployment fully
comes up. To avoid this issue we need to
wait for such resolution.

Dockerfile.simpleci

@@ -8,6 +8,7 @@ WORKDIR /go/src/github.com/minio/minio
 
 RUN apt-get update && apt-get install -y jq
 ENV GO111MODULE=on
+ENV SIMPLE_CI 1
 
 RUN git config --global http.cookiefile /gitcookie/.gitcookie
 
@@ -43,6 +44,8 @@ RUN make verify
 #-------------------------------------------------------------
 FROM node:10.15-stretch-slim
 
+ENV SIMPLE_CI 1
+
 COPY browser /minio/browser
 WORKDIR /minio/browser
 
@@ -63,6 +66,7 @@ ENV LANG C.UTF-8
 ENV GOROOT /usr/local/go
 ENV GOPATH /usr/local
 ENV PATH $GOPATH/bin:$GOROOT/bin:$PATH
+ENV SIMPLE_CI 1
 ENV MINT_ROOT_DIR /mint
 
 RUN apt-get --yes update && apt-get --yes upgrade && \