travis: print IP address for whitelisting
travis: print IP address for whitelisting

Signed-off-by: Pierre-Alexandre Meyer <ff019a5748a52b5641624af88a54a2f0e46a9fb5@mouraf.org>

andrenpaes/killbill-adyen-plugin,BLangendorf/killbill-adyen-plugin,killbill/killbill-adyen-plugin,arnelandwehr/killbill-adyen-plugin