Travis unable to load php odbc extension

[shinobu]

Since the commit 5585752 travis seems to fail to load the odbc extenson for the tests (which skips all virtuoto integration tests).

The commit that led to this didnt change anything relevant, hence this must result from a change from travis or the unixODBC-dev library that is installed for this. https://travis-ci.org/AKSW/OntoWiki/jobs/229888090 is the first travis job that had this issue.

PHP Warning:  PHP Startup: Unable to load dynamic library '/home/travis/.phpenv/versions/5.4.45/lib/php/extensions/no-debug-zts-20100525/odbc.so' - /home/travis/.phpenv/versions/5.4.45/lib/php/extensions/no-debug-zts-20100525/odbc.so: cannot open shared object file: No such file or directory in Unknown on line 0