Do not set httpd_can_network_connect if already set
Do not set httpd_can_network_connect if already set

On my F17 system, this reduces configure run time from 140 seconds to
45 seconds.

Signed-off-by: Richard Su <7714f540107d51b2f3f593edc327741039c9a8f2@redhat.com>

aeolusproject/aeolus-configure,aeolusproject/aeolus-configure,aeolusproject/aeolus-configure