Use elasticsearch action from its own repo and remove no longer used vendor directory

Author: rowanseymour

.DS_Store

@@ -12,7 +12,7 @@ jobs:
       uses: actions/checkout@v1
 
     - name: Install ElasticSearch
-      uses: ./.github/actions/elasticsearch
+      uses: nyaruka/elasticsearch-action@master
       with:
         elastic version: '6.8.5'
 

.github/actions/elasticsearch/Dockerfile

@@ -18,3 +18,5 @@ fabconfig.pyc
 .glide/
 
 *~
+
+.DS_Store