CFY-3040 checking if broker config exists before reading it
CFY-3040 checking if broker config exists before reading it

isaac-s/cloudify-plugins-common,isaac-s/cloudify-plugins-common,cloudify-cosmo/cloudify-plugins-common,codilime/cloudify-plugins-common,isaac-s/cloudify-plugins-common,codilime/cloudify-plugins-common,cloudify-cosmo/cloudify-plugins-common,codilime/cloudify-plugins-common,cloudify-cosmo/cloudify-plugins-common