Improve the create_rds.yml playbook.
Improve the create_rds.yml playbook.

arbrandes/edx-configuration,stvstnfrd/configuration,stvstnfrd/configuration,EDUlib/configuration,appsembler/configuration,EDUlib/configuration,stvstnfrd/configuration,EDUlib/configuration,arbrandes/edx-configuration,edx/configuration,edx/configuration,arbrandes/edx-configuration,appsembler/configuration,stvstnfrd/configuration,appsembler/configuration,edx/configuration,EDUlib/configuration,appsembler/configuration,stvstnfrd/configuration,arbrandes/edx-configuration,mitodl/configuration,mitodl/configuration,mitodl/configuration,mitodl/configuration,edx/configuration,arbrandes/edx-configuration,EDUlib/configuration