Issue search support elasticsearch (#9428)

* Issue search support elasticsearch

* Fix lint

* Add indexer name on app.ini

* add a warnning on SearchIssuesByKeyword

* improve code

vendor/github.com/olivere/elastic/v7/docker-compose.yml

@@ -0,0 +1,59 @@
+version: '3'
+
+services:
+  elasticsearch:
+    image: docker.elastic.co/elasticsearch/elasticsearch-oss:7.4.2
+    hostname: elasticsearch
+    environment:
+      - cluster.name=elasticsearch
+      - bootstrap.memory_lock=true
+      - discovery.type=single-node
+      # - http.host=0.0.0.0
+      # - transport.host=127.0.0.1
+      # - network.host=_local_
+      - network.publish_host=127.0.0.1
+      - logger.org.elasticsearch=warn
+      - "ES_JAVA_OPTS=-Xms1g -Xmx1g"
+    ulimits:
+      nproc: 65536
+      nofile:
+        soft: 65536
+        hard: 65536
+      memlock:
+        soft: -1
+        hard: -1
+    # volumes:
+    #   - ./data/elasticsearch:/usr/share/elasticsearch/data
+    ports:
+      - 9200:9200
+  platinum:
+    image: docker.elastic.co/elasticsearch/elasticsearch:7.4.2
+    hostname: elasticsearch-platinum
+    environment:
+      - cluster.name=platinum
+      - bootstrap.memory_lock=true
+      - discovery.type=single-node
+      - xpack.ilm.enabled=true
+      - xpack.license.self_generated.type=trial
+      - xpack.security.enabled=true
+      - xpack.watcher.enabled=true
+      # - http.host=0.0.0.0
+      # - transport.host=127.0.0.1
+      # - network.host=_local_
+      - http.port=9210
+      - network.publish_host=127.0.0.1
+      - logger.org.elasticsearch=warn
+      - "ES_JAVA_OPTS=-Xms1g -Xmx1g"
+      - ELASTIC_PASSWORD=elastic
+    ulimits:
+      nproc: 65536
+      nofile:
+        soft: 65536
+        hard: 65536
+      memlock:
+        soft: -1
+        hard: -1
+    # volumes:
+    #   - ./data/elasticsearch-platinum:/usr/share/elasticsearch/data
+    ports:
+      - 9210:9210