FreeBSD: test for http_proxy and add freebsd-update
add a test for http_proxy to avoid pkg and freebsd-update to failadd freebsd-update to finish script
Closes GH-261
FreeBSD: test for http_proxy and add freebsd-update
add a test for http_proxy to avoid pkg and freebsd-update to fail
add freebsd-update to finish script
Closes GH-261