Add support for multiple RGWs per host

Author: cityofships

galaxy.yml

@@ -1,6 +1,6 @@
 namespace: "stackhpc"
 name: "cephadm"
-version: "1.9.0"
+version: "1.10.0"
 readme: "README.md"
 authors:
   - "Michal Nasiadka"

roles/cephadm/README.md

@@ -70,12 +70,13 @@ All Ceph hosts must be in the `ceph` group.
       ```
   * RGWs
     * `cephadm_radosgw_services`: List of Rados Gateways services to deploy. `id` is an arbitrary name for the service,
-    `port` is a TCP port that RGW service should listen on.
+    `port` is a TCP port that RGW service should listen on. `count_per_host` is desired number of RGW services per host.
       Example:
       ```
           cephadm_radosgw_services:
             - id: myrgw
               port: 8000
+              count_per_host: 2
       ```
     Note that adding RGW or other services to an existing deployment requires setting `cephadm_bootstrap` variable to *True*.
 

roles/cephadm/templates/cluster.yml.j2

@@ -39,6 +39,9 @@ service_type: rgw
 service_id: {{ service.id }}
 placement:
   label: rgw
+{% if service.count_per_host is defined %}
+  count_per_host: {{ service.count_per_host }}
+{% endif %}
 {% if service.port is defined %}
 spec:
   rgw_frontend_port: {{ service.port }}