Migrate portal docs

Merging this will create
https://onap-portal.readthedocs.io
This build will run in parallel
to the current docs generation method
until we are ready to cut over.

Issue-ID: CIMAN-364
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I9635190029f31bd06068b30f26e63af73738a342
9 files changed