changing default ES version

main.tf

@@ -8,7 +8,7 @@ variable private_dns_address {}
 variable public_dns_zone {}
 variable public_dns_address {}
 
-variable elasticsearch_version {default = "1.5"}
+variable elasticsearch_version {default = "5.5"}
 variable automated_snapshot_start_hour {default = "02"}
 
 # EBS options
@@ -19,11 +19,11 @@ variable ebs_volume_size {default = "20"}
 # Cluster config
 # If zone awareness is enabled then an even number of data nodes is required.
 # Dedicated master count should be greater than 1
-variable instance_type {default = "t2.micro.elasticsearch"}
+variable instance_type {default = "m3.medium.elasticsearch"}
 variable instance_count {default = "2"}
 variable zone_awareness_enabled {default = "true"}
 variable dedicated_master_enabled {default = "true"}
-variable dedicated_master_type {default = "t2.micro.elasticsearch"}
+variable dedicated_master_type {default = "m3.medium.elasticsearch"}
 variable dedicated_master_count {default = "2"}