It leverages the latest change from lfdocs-conf and the
upper-constraints.txt now centralized in ONAP docs.
In a long run, upperconstraints.os.txt should be removed once ONAP
is synced with OpenStack.
It removes tox and setuptools from requirements as nothing depends on them
(most requirements should be removed except lfdocsconf)
Issue-ID: DOC-765
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
Change-Id: Id90ff3878230ace3b46f8964621b3fefcd23a556
(cherry picked from commit 
b02ac53a7b6a4b750c542f8d07639751a2eb61ba)
 html_last_updated_fmt = '%d-%b-%y %H:%M'
 
 def setup(app):
-    app.add_stylesheet("css/ribbon_onap.css")
+    app.add_css_file("css/ribbon_onap.css")
 
-tox
-Sphinx
-doc8
-docutils
-setuptools
-six
-sphinx_rtd_theme>=0.4.3
-sphinxcontrib-blockdiag
-sphinxcontrib-needs>=0.2.3
-sphinxcontrib-nwdiag
-sphinxcontrib-seqdiag
-sphinxcontrib-swaggerdoc
-sphinxcontrib-plantuml
-sphinx_bootstrap_theme
 lfdocs-conf
 
 
 [testenv:docs]
 basepython = python3
-deps = -r{toxinidir}/requirements-docs.txt
+deps =
+    -r{toxinidir}/requirements-docs.txt
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.os.txt?h=istanbul
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=istanbul
 commands =
     sphinx-build -b html -n -d {envtmpdir}/doctrees ./ {toxinidir}/_build/html
     echo "Generated docs available in {toxinidir}/_build/html"
 
    -name \*.rst -type f -print0 | xargs -0 rstcheck --report warning"
 
 [testenv:docs]
-deps = sphinx
+deps =
+   -r{toxinidir}/docs/requirements-docs.txt
+   -chttps://git.onap.org/doc/plain/etc/upper-constraints.os.txt?h=istanbul
+   -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=istanbul
 commands = sphinx-build -W -b html docs docs/build/html