Increasing number of files triggering build of docs

Upper constraints on the packages used for building
documentation were introduced, to reduce chance
of incompatible package versions causing build failures.

Counterpart to: I8021f786476b61bbf88bf21a1151ce3198f7abbd

Signed-off-by: Jiri Podivin <jpodivin@redhat.com>
Change-Id: I6f7a94393f44a63145375a9b490d85714dd0545a

tox.ini

@@ -31,7 +31,7 @@ setenv =
 commands =
     stestr run --slowest --color {posargs}
 deps =
-    -c {env:TOX_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
+    -c {env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
     -r {toxinidir}/requirements.txt
     -r {toxinidir}/test-requirements.txt
     -r {toxinidir}/molecule-requirements.txt
@@ -119,6 +119,7 @@ commands =
 
 [testenv:docs]
 deps =
+  -c {env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r {toxinidir}/doc/requirements.txt
   -r {toxinidir}/molecule-requirements.txt
 commands=

zuul.d/layout.yaml

@@ -14,6 +14,10 @@
               - ^molecule-requirements.txt
               - ^requirements.txt
               - ^README.rst
+              - ^tripleo_validations/.*
+              - ^roles/.*
+              - ^playbooks/.*
+              - ^library/.*
         - tripleo-ci-centos-8-content-provider:
             dependencies:
               - openstack-tox-linters