[tox] Install "pyramid" dependencies in "doc" environment
Otherwise most of the cubicweb.pyramid API doc fails to build. For this we
skip installation in the "doc" environment and source the new
requirements/doc.txt which will install cubicweb[pyramid], thus pulling
cubicweb plus pyramid's dependencies.
Furthermore this requirements/doc.txt would be useful to build to
documentation on readthedocs.
### Requirements for tests in various cubicweb/**/test directories. ###
## shared by several test folders
cubicweb-card
docutils
Twisted < 16.0.0
webtest
## cubicweb/test
Pygments
mock
#fyzz XXX pip install fails
cubicweb-file
cubicweb-localperms
cubicweb-tag
## cubicweb/devtools/test
flake8
## cubicweb/hooks/test
psycopg2
## cubicweb/pyramid/test
pyramid >= 1.5.0
waitress >= 0.8.9
wsgicors >= 0.3
pyramid_multiauth
## cubicweb/sobject/test
cubicweb-comment