mysql: Fix mysql config
mysql: Fix mysql config

devstack attempts to set bind-address, sql_mode, default-storage-engine,
max_connections, query_cache_type and query_cache_size.

However the bash command is missing some '&&'s and was omiting
max_connections, query_cache_type and query_cache_size.

Change-Id: I24388b5de777995f92d73076524122cf599d6371

liuquansheng47/devstack,olivierlemasle/devstack,NaokiMiyata/devstack,TwinkleChawla/devstack,pombredanne/devstack,NaokiMiyata/devstack,pczerkas/devstack,mc2014/devstack,ozamiatin/devstack,mssumanth/devstack,avvocatodemarchis/devstack,ozamiatin/devstack,costingalan/devstack,bswartz/devstack,eharney/devstack,upadhyay-prashant/devstack,bigswitch/devstack,flavio-fernandes/devstack,mmasaki/devstack,group-policy/devstack,pacinete/devstack,openstack-dev/devstack,dirkmueller/devstack,bq-xiao/devstack,noironetworks/devstack,varunarya10/devstack,pczerkas/devstack,parul24/devstack,liuquansheng47/devstack,bswartz/devstack,dirkmueller/devstack,pombredanne/devstack,HPCHub/devstack,prithivm/branch01,upadhyay-prashant/devstack,eharney/devstack,nawawi/openstack,noironetworks/devstack,varunarya10/devstack,bigswitch/devstack,Mahito/devstack,Mahito/devstack,richliu/devstack,vsham20/devstack,vishnugonela/devstack,dtroyer/devstack,TwinkleChawla/devstack,prithivm/branch01,atulpatil301/devstack,richliu/devstack,mmasaki/devstack,atulpatil301/devstack,group-policy/devstack,pacinete/devstack,bq-xiao/devstack,costingalan/devstack,nawawi/openstack,vishnugonela/devstack,openstack-dev/devstack,thomasem/devstack,olivierlemasle/devstack,mc2014/devstack,flavio-fernandes/devstack,mssumanth/devstack,samgoon/devstack,vsham20/devstack,HPCHub/devstack,parul24/devstack,thomasem/devstack,dtroyer/devstack,samgoon/devstack,herrsechs/devstack,avvocatodemarchis/devstack,herrsechs/devstack