include all docs and tests in the sdist (#20004)

also don't prune packaging (it is included later) and v2 (it does not exist)

Fixes: #19769

MANIFEST.in

@@ -1,9 +1,4 @@
-prune v2
-prune docs/docsite
-prune docs/api
 prune ticket_stubs
-prune packaging
-prune test
 prune hacking
 include README.md COPYING
 include examples/hosts
@@ -11,8 +6,12 @@ include examples/ansible.cfg
 include lib/ansible/module_utils/powershell.ps1
 recursive-include lib/ansible/modules *
 recursive-include lib/ansible/galaxy/data *
-recursive-include docs/man *
+recursive-include docs *
+include hacking/module_formatter.py
+include hacking/dump_playbook_attributes.py
+recursive-include hacking/templates *
 recursive-include packaging *
+recursive-include test *
 include Makefile
 include VERSION
 include MANIFEST.in