CFY-642 small bug fix in task registered verification
CFY-642 small bug fix in task registered verification

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