Add missing ansible-test --remote-terminate support. (#32918)

* Expand ansible-test --remote-terminate support:

- windows-integration
- network-integration

These commands previously accepted the option, but did not support it.

* Terminate windows and network instances when done.

test/utils/shippable/network.sh

@@ -41,7 +41,14 @@ else
 fi
 
 for version in "${python_versions[@]}"; do
+    # terminate remote instances on the final python version tested
+    if [ "${version}" = "${python_versions[-1]}" ]; then
+        terminate="always"
+    else
+        terminate="never"
+    fi
+
     # shellcheck disable=SC2086
     ansible-test network-integration --color -v --retry-on-error "${target}" --docker default --python "${version}" \
-        ${COVERAGE:+"$COVERAGE"} ${CHANGED:+"$CHANGED"} "${platforms[@]}"
+        ${COVERAGE:+"$COVERAGE"} ${CHANGED:+"$CHANGED"} "${platforms[@]}" --remote-terminate "${terminate}"
 done