Update Model.dump to first load the value

Update Model.dump to first load the value to ensure it's the correct type.
Yes, that's correct. See here:
https://github.com/rightscale/mc_right_site/blob/nextgen_14_17_acu179897_dss_msa_extraction/app/v1/resources/instance.rb#L34-L42

https://github.com/rightscale/mc_right_site/blob/nextgen_14_17_acu179897_dss_msa_extraction/design/v1/media_types/instance.rb#L29-L35