Support start redis received signal (OT-CONTAINER-KIT#59)

Signed-off-by: drivebyer <wuyangmuc@gmail.com>

Author: drivebyer

entrypoint-sentinel.sh

@@ -71,11 +71,8 @@ acl_setup(){
 }
 
 start_sentinel() {
-
   echo "Starting  sentinel service ....."
-    redis-sentinel /etc/redis/sentinel.conf
-  
-
+  exec redis-sentinel /etc/redis/sentinel.conf
 }
 
 main_function() {

entrypoint.sh

@@ -114,7 +114,7 @@ start_redis() {
         fi
 
         if [[ "${REDIS_MAJOR_VERSION}" != "v7" ]]; then
-          redis-server /etc/redis/redis.conf \
+          exec redis-server /etc/redis/redis.conf \
           --cluster-announce-ip "${CLUSTER_ANNOUNCE_IP}" \
           --cluster-announce-hostname "${POD_HOSTNAME}"
         else
@@ -123,12 +123,12 @@ start_redis() {
             echo cluster-announce-hostname "${POD_HOSTNAME}"
           } >> /etc/redis/redis.conf
 
-          redis-server /etc/redis/redis.conf
+          exec redis-server /etc/redis/redis.conf
         fi
 
     else
         echo "Starting redis service in standalone mode....."
-        redis-server /etc/redis/redis.conf
+        exec redis-server /etc/redis/redis.conf
     fi
 }