update max size if equal to desired capacity

lib/aws-missing-tools/aws-ha-release/aws-ha-release.rb

@@ -1,4 +1,6 @@
 class AwsHaRelease
+  attr_reader :max_size_change
+
   def initialize(opts)
     AWS.config(access_key_id: opts[:aws_access_key], secret_access_key: opts[:aws_secret_key], region: opts[:region])
 
@@ -8,9 +10,16 @@ class AwsHaRelease
     if @group.nil?
       raise ArgumentError, "The Auto Scaling Group named #{opts[:as_group_name]} does not exist in #{opts[:region]}."
     end
+
+    @max_size_change = 0
   end
 
   def execute!
     @group.suspend_processes 'ReplaceUnhealthy', 'AlarmNotification', 'ScheduledActions', 'AZRebalance'
+
+    if @group.max_size == @group.desired_capacity
+      @group.update(max_size: @group.max_size + 1)
+      @max_size_change += 1
+    end
   end
 end