travis: Run bootstrap to fix build
autogen.sh isn't enough:
$ ./autogen.sh
Gnulib not yet bootstrapped; run ./bootstrap instead.
The command "./autogen.sh" exited with 1.
Additionally, using bootstrap requires to install autopoint package.
Signed-off-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>