Fix and enable more tests for osx and freebsd. (#20482)

* Fix `iterators` test for osx.
* Enable `git` test for osx.
* Enable `get_url` test for osx and freebsd.
* Remove unused SNI_URI from uri test.
* Use ansible hosted SNI host oustside docker.
* Enable `uri` test for osx and freebsd.
* Enable `gathering_facts` test for osx.
* Skip single task on osx until test is fixed.

test/integration/targets/git/aliases

@@ -1,3 +1,2 @@
 destructive
 posix/ci/group1
-skip/osx

test/integration/targets/git/tasks/checkout-new-tag.yml

@@ -48,6 +48,9 @@
     that:
       - not update_new_tag|changed
       - "'newtag' in listoftags.stdout_lines"
+  # This test fails on osx.
+  # Skipping it here so the remaining tests can be enabled.
+  when: '{{ ansible_distribution != "MacOSX" }}'
 
 
 - name: clear checkout_dir