Adding Id key to MsgObject for transaction_id value

Signed-off-by: Jedi Ballono <jballono@stackify.com>

Author: jedi-ballono

lib/stackify/utils/msg_object.rb

@@ -1,11 +1,11 @@
 module Stackify
   class MsgObject
-    def initialize level, msg, caller_str, ex=nil
-      @level, @msg, @caller_str, @ex = level, msg, caller_str, ex
+    def initialize level, msg, caller_str, id=nil, ex=nil
+      @level, @msg, @caller_str, @ex = level, msg, caller_str, ex, @id = id
     end
 
     def to_h
-      {
+      details = {
         'Msg' => @msg.to_s,
         'data' => nil,
         'Ex' => @ex.try(:to_h),
@@ -17,6 +17,8 @@ def to_h
         'SrcMethod' => Stackify::Backtrace.method_name(@caller_str),
         'SrcLine' => Stackify::Backtrace.line_number(@caller_str)
       }
+      details['Id'] = @id if @id
+      return details
     end
   end
 end