refactor(interactive): Use netcat to check service readiness (#4342)

Previously we used a Gremlin query to check whether the Gremlin service
is ready, which may reveal unexpected problems. It is better to use
netcat to find out whether the endpoint is ready for serving.

charts/graphscope-store/templates/configmap.yaml

@@ -181,7 +181,12 @@ data:
       export GRPC_PORT=${GROOT_GRPC_PORT}
       export GREMLIN_PORT=${GROOT_GREMLIN_PORT}
       echo "${HOST} ${GRPC_PORT} ${GREMLIN_PORT}"
-      python3 -c 'import base64;import os;from gremlin_python.driver.client import Client;ip=os.getenv("HOST");gremlin_port=os.getenv("GREMLIN_PORT");graph_url=f"ws://{ip}:{gremlin_port}/gremlin";username=os.getenv("GROOT_USERNAME");password=base64.b64decode(os.getenv("GROOT_PASSWORD")).decode("utf-8");client = Client(graph_url, "g", username=username, password=password); ret = client.submit("g.V().limit(1)").all().result(); client.close();' && break
+      cmd="nc -zv ${HOST} ${GREMLIN_PORT}"
+      res=$(eval $cmd 2>&1)
+      if [[ $res == *succeeded* ]]; then
+        # Expected Output is <Connection to localhost (::1) 8182 port [tcp/*] succeeded!>
+        break
+      fi
       sleep 3
     done
 

k8s/dockerfiles/coordinator.Dockerfile

@@ -36,7 +36,7 @@ FROM ubuntu:22.04 AS coordinator
 ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update -y && \
-    apt-get install -y sudo python3-pip openmpi-bin curl tzdata && \
+    apt-get install -y sudo python3-pip openmpi-bin curl tzdata netcat && \
     apt-get clean -y && \
     rm -rf /var/lib/apt/lists/*
 

k8s/dockerfiles/graphscope-dev-wheel.Dockerfile

@@ -51,6 +51,7 @@ RUN yum install -y sudo vim && \
     yum remove java-1.8.0-openjdk-devel java-1.8.0-openjdk java-1.8.0-openjdk-headless -y && \
     yum install java-11-openjdk-devel -y && \
     yum clean all -y --enablerepo='*' && \
+    yum install -y netcat && \ 
     rm -rf /var/cache/yum
 
 RUN mkdir -p /opt/graphscope /opt/vineyard && chown -R graphscope:graphscope /opt/graphscope /opt/vineyard