Tests should not use port :8080

[eserte]

The www_main.t test fails if port 8080 is already taken by another webserver (not that unlikely):

#   Failed test 'start up my web server'
#   at t/www/www_main.t line 23.
# HTTP::Server::Simple->background failed: bind to *:8080: Address already in use at /opt/perl-5.25.10/lib/5.25.10/NEXT.pm line 95.
[Fri Feb 24 08:37:00 2017] www_main.t: Missing base argument at /opt/perl-5.25.10/lib/site_perl/5.25.10/HTTP/Response.pm line 94.
t/www/www_main.t ....... 
Failed 1/3 subtests 

Probably it's best to use another (randomly choosen) port for testing.