adding run tag (krkn-chaos#1179)

Signed-off-by: Paige Patton <prubenda@redhat.com>

Author: paigerube14

containers/krknctl-input.json

@@ -163,6 +163,15 @@
     "default": "False",
     "required": "false"
   },
+  {
+    "name": "es-run-tag",
+    "short_description": "Elasticsearch run tag",
+    "description": "Elasticsearch run tag to compare similar runs",
+    "variable": "ES_RUN_TAG",
+    "type": "string",
+    "default": "",
+    "required": "false"
+  },
   {
     "name": "es-server",
     "short_description": "Elasticsearch instance URL",