Provide RTD documentation for CPS Temporal

Answer to questions we had:

• Where are RST documentation files kept ? 
  • => In cps temporal repo (as it is done for cps repo)
• Which will be documentation url
  • => One entry point for all CPS documentation available at https://docs.onap.org/projects/onap-cps/en/latest/index.html. From there, documentation for all CPS components (core, ncmp, temporal, ...) shall be available.
• What is the impact on the overall ONAP architecture diagram https://safratech.net/onapdocs/ (it should have a link to cps rtd) ?
  • => One CPS link be in architecture documentation. It should be: https://docs.onap.org/projects/onap-cps/en/latest/index.html

 AC:

• CPS temporal documentation is available in ONAP RTD. Browsable from CPS root documenation page: https://docs.onap.org/projects/onap-cps/en/latest/index.html
• Documentation is reviewed by the team
• https://wiki.onap.org/display/DW/Istanbul+Documentation is updated with cps temporal