Travis can't test book any more because when installing the dev version of appy , it requires to accept a certification.

We got the following tracelog in travis.

Error validating server certificate for 'svn.forge.pallavi.be:443':

 - The certificate has expired.

Certificate information:

 - Hostname: *.forge.pallavi.be

 - Valid: from Aug 10 00:00:00 2016 GMT until Aug...

 - Issuer: TERENA SSL CA 3, TERENA, Amsterdam, Noord-Holland, NL

 - Fingerprint: 54:F7:A4:ED:F0:75:C7:24:3A:51:CA:D1:50:13:AA:40:E3:44:3B:4D

(R)eject, accept (t)emporarily or accept (p)ermanently?