travis-ci: switch tests from sqlite3 to SQLCipher
travis-ci: switch tests from sqlite3 to SQLCipher

This will test the encryption, which is the part we care about anyway.

guardianproject/libsqlfs,guardianproject/libsqlfs,guardianproject/libsqlfs,eighthave/libsqlfs,eighthave/libsqlfs,eighthave/libsqlfs,guardianproject/libsqlfs,eighthave/libsqlfs,guardianproject/libsqlfs,eighthave/libsqlfs