add warm node action for hot/warm

salt/curator/files/action/warm.yml

@@ -0,0 +1,23 @@
+#actions:
+#  1:
+#    action: allocation
+#    description: "Apply shard allocation filtering rules to the specified indices"
+#    options:
+#      key: box_type
+#      value: warm
+#      allocation_type: require
+#      wait_for_completion: true
+#      timeout_override:
+#      continue_if_exception: false
+#      disable_action: false
+#    filters:
+#    - filtertype: pattern
+#      kind: prefix
+#      value: so-
+#    - filtertype: age
+#      source: name
+#      direction: older
+#      timestring: '%Y.%m.%d'
+#      unit: days
+#      unit_count: 3 
+