[improve][docker] fix yaml and dockerfile (apache#4186)

Descriptions of the changes in this PR:
1. There are multiple spec.ports fields in sts yaml
2. The RUN command specified in dockerfile is not standardized

Master Issue: apache#4185

deploy/kubernetes/gke/bookkeeper.statefulset.yml

@@ -124,7 +124,6 @@ metadata:
     app: bookkeeper
     component: bookie
 spec:
-  ports:
   ports:
     - name: bookie
       port: 3181

tests/docker-images/statestore-image/Dockerfile

@@ -40,10 +40,10 @@ RUN set -x \
     && apt-get install -y --no-install-recommends python3 pip \
     && ln -s /usr/bin/python3 /usr/bin/python \
     && apt-get install -y --no-install-recommends gpg gpg-agent wget sudo \
-     && apt-get -y --purge autoremove \
-     && apt-get autoclean \
-     && apt-get clean \
-     && rm -rf /var/lib/apt/lists/*
+    && apt-get -y --purge autoremove \
+    && apt-get autoclean \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/* \
     && pip install zk-shell \
     && mkdir -pv /opt \
     && cd /opt