[#44307145] Fix bug too many open files. Disconnect from db after each spec.
[#44307145] Call super in tube resource to display all the tube fields.
[#44307145] Add specs for tube type and max_volume
[#44307145] Fix other specs with tube type and max volume
Merge branch 'development' of github.com:llh1/lims-api into 44307145_expose_plate_type_and_tube_type_volume_in_the_api
[#44307145] Expose plate type in the API
Merge pull request #97 from llh1/44307145_expose_plate_type_and_tube_type_volume_in_the_api

44307145 expose plate type and tube type volume in the api