Add test for phpiredis_multi_command_bs().
Add test for phpiredis_multi_command_bs().

jymsy/phpiredis,RustJason/phpiredis,Danack/phpiredis,jymsy/phpiredis,RustJason/phpiredis,Danack/phpiredis,Danack/phpiredis,nrk/phpiredis,RustJason/phpiredis,nrk/phpiredis,nrk/phpiredis