[Optimize]优化ES索引及模版的初始化文档(#832)

1、订正不同地方索引模版的shard数存在不一致的问题；
2、删除多余的template.sh，统一使用init_es_template.sh；
3、init_es_template.sh中，增加connect相关索引模版的初始化脚本，删除replica 和 zookeper索引模版的初始化脚本；

km-persistence/src/main/resources/es/template/ks_kafka_group_metric

@@ -5,7 +5,7 @@
     ],
     "settings" : {
       "index" : {
-        "number_of_shards" : "10"
+        "number_of_shards" : "6"
       }
     },
     "mappings" : {

km-persistence/src/main/resources/es/template/ks_kafka_partition_metric

@@ -5,7 +5,7 @@
     ],
     "settings" : {
       "index" : {
-        "number_of_shards" : "10"
+        "number_of_shards" : "6"
       }
     },
     "mappings" : {

km-persistence/src/main/resources/es/template/ks_kafka_topic_metric

@@ -5,7 +5,7 @@
     ],
     "settings" : {
       "index" : {
-        "number_of_shards" : "10"
+        "number_of_shards" : "6"
       }
     },
     "mappings" : {

km-persistence/src/main/resources/es/template/ks_kafka_zookeeper_metric

@@ -5,7 +5,7 @@
     ],
     "settings" : {
       "index" : {
-        "number_of_shards" : "10"
+        "number_of_shards" : "2"
       }
     },
     "mappings" : {