Add package mongodb to files/rpms/zaqar-server
Add package mongodb to files/rpms/zaqar-server

The command mongo, used in lib/zaqar, is part of the package mongodb.
At the moment only mongodb-server is listed in files/rpms/zaqar-server,
mongodb has to be added there.

Change-Id: I60edeae6760addad62b9b61c3dcdecc2ff01cba7
Closes-bug: #1430939

LoHChina/devstack,sequenceiq/devstack,BSJAIN92/OpenStack,prithivm/branch01,vsham20/devstack,mc2014/devstack,dirkmueller/devstack,pombredanne/devstack,upadhyay-prashant/devstack,HPCHub/devstack,varunarya10/devstack,varunarya10/devstack,upadhyay-prashant/devstack,parul24/devstack,flavio-fernandes/devstack,dtroyer/devstack,mmasaki/devstack,costingalan/devstack,LoHChina/devstack,bljgaurav/openstack-test,wenhuizhang/devstack,vsham20/devstack,mssumanth/devstack,herrsechs/devstack,pczerkas/devstack,olivierlemasle/devstack,olivierlemasle/devstack,TwinkleChawla/devstack,nawawi/openstack,thomasem/devstack,noironetworks/devstack,mc2014/devstack,ozamiatin/devstack,NaokiMiyata/devstack,andrewrothstein/devstack,pczerkas/devstack,mmasaki/devstack,richliu/devstack,pombredanne/devstack,dtroyer/devstack,bigswitch/devstack,bswartz/devstack,mssumanth/devstack,neerja28/Devstack_GlusterFS,avvocatodemarchis/devstack,openstack-dev/devstack,sequenceiq/devstack,vishnugonela/devstack,CloudServer/devstack,j4/devstack,nuxeh/devstack,bq-xiao/devstack,eharney/devstack,rushiagr/devstack,pacinete/devstack,HPCHub/devstack,atulpatil301/devstack,ozamiatin/devstack,kplus/devstack-moonshot,neerja28/Devstack_GlusterFS,openstack-dev/devstack,Mahito/devstack,bigswitch/devstack,bswartz/devstack,liuquansheng47/devstack,dirkmueller/devstack,Mahito/devstack,prithivm/branch01,NaokiMiyata/devstack,avvocatodemarchis/devstack,bq-xiao/devstack,group-policy/devstack,richliu/devstack,TwinkleChawla/devstack,wenhuizhang/devstack,BSJAIN92/OpenStack,group-policy/devstack,j4/devstack,bljgaurav/openstack-test,parul24/devstack,pacinete/devstack,nawawi/openstack,noironetworks/devstack,samgoon/devstack,eharney/devstack,thomasem/devstack,atulpatil301/devstack,andrewrothstein/devstack,rushiagr/devstack,costingalan/devstack,samgoon/devstack,nuxeh/devstack,kplus/devstack-moonshot,liuquansheng47/devstack,flavio-fernandes/devstack,vishnugonela/devstack,herrsechs/devstack,CloudServer/devstack