Backport/2.10/docs config (#74278)

* update intersphinx links for Ansible 3

(cherry picked from commit 481c036632)

* updates list of available versions for Ansible 3 (#74265)

(cherry picked from commit 126e9244c2)

Co-authored-by: Sandra McCann <samccann@redhat.com>

docs/docsite/sphinx_conf/ansible_conf.py

@@ -160,7 +160,7 @@ html_context = {
     'current_version': version,
     'latest_version': '3',
     # list specifically out of order to make latest work
-    'available_versions': ('latest', '2.10', '2.9', '2.9_ja', '2.8', 'devel'),
+    'available_versions': ('latest', '2.9', 'devel'),
     'css_files': ('_static/ansible.css',  # overrides to the standard theme
                   ),
 }
@@ -290,6 +290,7 @@ autoclass_content = 'both'
 intersphinx_mapping = {'python': ('https://docs.python.org/2/', (None, '../python2.inv')),
                        'python3': ('https://docs.python.org/3/', (None, '../python3.inv')),
                        'jinja2': ('http://jinja.palletsprojects.com/', (None, '../jinja2.inv')),
+                       'ansible_3': ('https://docs.ansible.com/ansible/3/', (None, '../ansible_3.inv')),
                        'ansible_2_10': ('https://docs.ansible.com/ansible/2.10/', (None, '../ansible_2_10.inv')),
                        'ansible_2_9': ('https://docs.ansible.com/ansible/2.9/', (None, '../ansible_2_9.inv')),
                        'ansible_2_8': ('https://docs.ansible.com/ansible/2.8/', (None, '../ansible_2_8.inv')),

docs/docsite/sphinx_conf/core_conf.py

@@ -298,6 +298,7 @@ autoclass_content = 'both'
 intersphinx_mapping = {'python': ('https://docs.python.org/2/', (None, '../python2.inv')),
                        'python3': ('https://docs.python.org/3/', (None, '../python3.inv')),
                        'jinja2': ('http://jinja.palletsprojects.com/', (None, '../jinja2.inv')),
+                       'ansible_3': ('https://docs.ansible.com/ansible/3/', (None, '../ansible_3.inv')),
                        'ansible_2_10': ('https://docs.ansible.com/ansible/2.10/', (None, '../ansible_2_10.inv')),
                        'ansible_2_9': ('https://docs.ansible.com/ansible/2.9/', (None, '../ansible_2_9.inv')),
                        'ansible_2_8': ('https://docs.ansible.com/ansible/2.8/', (None, '../ansible_2_8.inv')),