Show alert count behind group
Show alert count behind group

Signed-off-by: stuart nelson <f07588fb19e9aef0215864aeb9ff233a855ee86d@gmail.com>

prometheus/alertmanager,prometheus/alertmanager,prometheus/alertmanager,GoogleCloudPlatform/alertmanager,GoogleCloudPlatform/alertmanager,GoogleCloudPlatform/alertmanager,prometheus/alertmanager,GoogleCloudPlatform/alertmanager