Update Makefile to check the generated files for the schemas
Update Makefile to check the generated files for the schemas

Add make command to generate the schemas for the content models.  Include the command to one of the steps for checking generated files.

StackStorm/st2,StackStorm/st2,nzlosh/st2,Plexxi/st2,Plexxi/st2,Plexxi/st2,nzlosh/st2,Plexxi/st2,nzlosh/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2