Log Message:
Update p5-Test-DNS to 0.13.

Changes from previous:
0.13    03.09.11
        - only run tests if got $ENV{'AUTHOR_TESTING'} because I'm sick
        of releases like 0.10 - 0.13.

0.12    24.08.11
        - updating dns records information, no functional changes

0.11    29.06.11
        - updating dns records information, no functional changes

0.10    18.05.11
        - updating dns records information, no functional changes

0.09    15.03.11
        - moving to dzil
        - updating dns records information, no functional changes