[Update] www/p5-Dancer2 : update to 0.300002

Hi, ports@:

Here is a patch for www/p5-Dancer2:
i) Update to 0.300002
ii) Add devel/p5-Test-CPAN-Meta to TEST_DEPENDS


It build well and run well and pass all tests on amd64-current system.

4 ports depends on it, all build well and pass all tests.
www/p5-Dancer2-Plugin-Ajax
www/p5-Dancer2-Plugin-Database
www/p5-Dancer2-Plugin-DBIC
www/p5-Dancer2-Plugin-Auth-Tiny

wen