Adding config for RTD

-added config to files related to https://gerrit.onap.org/r/c/cps/+/130246/29

Issue-ID: CPS-1237
Signed-off-by: JosephKeenan <joseph.keenan@est.tech>
Change-Id: Ia2fe7d2ecf3bb33608139c5fbf1328dc211f5629
diff --git a/docs/tox.ini b/docs/tox.ini
index c329a7e..ab2de1b 100644
--- a/docs/tox.ini
+++ b/docs/tox.ini
@@ -1,26 +1,46 @@
+# ============LICENSE_START=======================================================
+# Copyright (C) 2022 Nordix Foundation
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+
 [tox]
 minversion = 1.6
-envlist = docs,
+envlist = docs,docs-linkcheck,docs-spellcheck
 skipsdist = true
-
 [testenv:docs]
 basepython = python3.8
-deps = -r{toxinidir}/requirements-docs.txt
-       -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
-       -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt
+deps =
+    -r{toxinidir}/requirements-docs.txt
+    -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
 commands =
-    sphinx-build -b html -n -d {envtmpdir}/doctrees ./ {toxinidir}/_build/html
-    echo "Generated docs available in {toxinidir}/_build/html"
-whitelist_externals =
-    echo
-    git
-    sh
-
+    sphinx-build -q -b html -n -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/html
 [testenv:docs-linkcheck]
 basepython = python3.8
-deps = -r{toxinidir}/requirements-docs.txt
-       -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
-       -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt
-commands = echo "Link Checking not enforced"
-#commands = sphinx-build -b linkcheck -d {envtmpdir}/doctrees ./ {toxinidir}/_build/linkcheck
-whitelist_externals = echo
+deps =
+    -r{toxinidir}/requirements-docs.txt
+    -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
+commands =
+    sphinx-build -b linkcheck -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/linkcheck
+[testenv:docs-spellcheck]
+basepython = python3.8
+deps =
+    -r{toxinidir}/requirements-docs.txt
+    -chttps://raw.githubusercontent.com/openstack/requirements/stable/yoga/upper-constraints.txt
+    -chttps://git.onap.org/doc/plain/etc/upper-constraints.onap.txt?h=master
+commands =
+    sphinx-build -b spelling -Dextensions=sphinxcontrib.spelling -d {envtmpdir}/doctrees {toxinidir} {toxinidir}/_build/spellcheck