Pull request #1433: Upgrade elasticsearch version 7

Merge in CATS/clowder from upgrade-elasticsearch-version-7 to 2.0-work-in-progress

* commit '3930461967d4a550d4cf9bbd6e95eeabe17c0594': (21 commits)
  Default port for elasticsearch from 9300 to 9200 since with the upgraded to v7 we now use the HTTP port to connect. Changed default Elasticsearch cluster name to `clowder` since that is what we use in the docker compose. Rolled back change to the name of the elasticsearch volume.
  Print exception if there is an unknown error connecting to Elasticsearch.
  Updates docker compose elasticsearch definition.
  Updated CHANGELOG.md
  missing bracket in Search
  git wars battle 3 - re-re-fix index mappings
  rename 75
  Create ElasticsearchSearchService75.scala
  Recover elasticsearch changes
  Merge branch '2.0-work-in-progress' into upgrade-elasticsearch-version-7
  Fix index creation mappings
  Update ElasticsearchSearchService.scala
  migration WIP
  Update ElasticsearchSearchService.scala
  finish integrating queue service and search service
  add MemoryQueue service
  fix parsing to SearchResult
  Update CHANGELOG.md
  overhaul of search and queue service design
  clean up and formalize search result handling for service
  ...

Author: lmarini

CHANGELOG.md

@@ -24,6 +24,7 @@ Clowder runs in a location that doesn't not have access to https://clowderframew
 ### Changed
 - SpaceSharingPlugin, SpaceCopyPlugin, StagingAreaPlugin replaced with value in application.conf.
 - AdminNotifierPlugin replaced with AdminNotifierService
+- Upgraded Elasticsearch from 2.3.5 to 7.5.2. 
 
 ## Unreleased
 

app/api/Search.scala

@@ -51,7 +51,7 @@ class Search @Inject() (
 
   /** Search using string-encoded Json object (e.g. built by Metadata Search form) */
   def searchJson(query: String, grouping: String, from: Option[Int], size: Option[Int]) = PermissionAction(Permission.ViewDataset) {
-    implicit request =>
+    implicit request => {
       implicit val user = request.user
 
       if (searches.isEnabled) {
@@ -61,7 +61,7 @@ class Search @Inject() (
       } else {
         BadRequest("Elasticsearch plugin could not be reached")
       }
-
+    }
   }
 
   /**