Add Functional tests for ProxySettingsPolicy#4482

tataruty wants to merge 2 commits intofeat/proxy-settings-policynginx/nginx-gateway-fabric:feat/proxy-settings-policyfrom

tests/functional_tests_for_proxysettingspolicynginx/nginx-gateway-fabric:tests/functional_tests_for_proxysettingspolicyCopy head branch name to clipboard