2.8 Core Deprecation Removal (#45232)

* Remove deprecated ansible.vars.unsafe_proxy. Fixes #45040

* Remove deprecated validate_md5 alias from fetch module. Fixes #45039

* Remove deprecated private arg from import/include_role. Fixes #45038

* All include deprecations bumped to 2.12. Fixes #45037

* Add changelog for deprecated removals

test/integration/targets/include_import/role/test_import_role.yml

@@ -66,11 +66,7 @@
         name: role3
         tasks_from: vartest.yml
         vars_from: role3vars.yml
-        private: no
 
-    # FIXME Setting private: no in previous task does not make the variables
-    # available to the play
-    #
     - name: Assert that variables defined in previous task are available to play
       assert:
         that:

test/integration/targets/include_import/role/test_include_role.yml

@@ -69,10 +69,7 @@
         name: role3
         tasks_from: vartest.yml
         vars_from: role3vars.yml
-        private: no
 
-    # FIXME Setting private: no in previous task does not make the variables
-    # available to the play
     - name: Assert that variables defined in previous task are available to play
       assert:
         that: