rename database-service cookbook to database
add 'database' as a possible service type for registering with keystone
add database mq service for trove
add mq and endpoint attributes to -common
install rubygem-mysql manually in the trove cookbook
add database cookbook dependency
remove superfluous/useless code

allow_multiple_proposals? is already defined in the ServiceObject class
with the same functionality
delete empty file libraries/search.rb
add requires to crowbar.yml