Add support for running object-servers Per Disk

Adds support for configuring different storage port per disk
in the storage policy ring. This Swift feature is described
here https://docs.openstack.org/swift/latest/deployment_guide.html#running-object-servers-per-disk

Signed-off-by: Andrej Babolcai <andrej.babolcai@gmail.com>
Change-Id: I254e35a67195817c237dba00bec6338d3fffa985

doc/source/configure-swift-config.rst

@@ -225,6 +225,8 @@ file**
        #             weight: 75
        #             groups:
        #               - gold
+       #             storage_port: 6010
+       #             repl_port: 6110
        #           - name: sdc
        #           - name: sdd
        #           - name: sde
@@ -249,6 +251,11 @@ file**
        If neither are specified, both default to the host IP
        address.
 
+   ``storage_port`` and ``repl_port``
+       Used to enable running object servers per disk. The default value
+       for both is ``swift_object_port``.
+       https://docs.openstack.org/swift/latest/deployment_guide.html
+
    ``zone``
        The default is 0. Optionally, set the swift zone for the
        ring.

templates/ring.contents.j2

@@ -69,15 +69,17 @@
 {%       set weight = drive.weight | default(swift_vars.weight | default(swift.weight | default(swift_default_drive_weight))) %}
 {%       set region = drive.region | default(swift_vars.region | default(swift.region | default(swift_default_host_region))) %}
 {%       set zone = drive.zone | default(swift_vars.zone | default(swift.zone | default(swift_default_host_zone))) %}
+{%       set stor_port = drive.storage_port | default(port) %}
+{%       set repl_port = drive.repl_port | default(port) %}
 {###     Update the device with the appropriate values #}
 {%       set _update = device.update({'device':drive.name}) %}
 {%       set _update = device.update({'weight': weight|int}) %}
 {%       set _update = device.update({'region': region|int}) %}
 {%       set _update = device.update({'zone': zone|int}) %}
 {%       set _update = device.update({'replication_ip': repl_ip}) %}
-{%       set _update = device.update({'replication_port': port|int}) %}
+{%       set _update = device.update({'replication_port': repl_port|int}) %}
 {%       set _update = device.update({'ip': storage_ip}) %}
-{%       set _update = device.update({'port': port|int}) %}
+{%       set _update = device.update({'port': stor_port|int}) %}
 {###     Append the device to the drives list of the builder dict #}
 {%       set _update = builder.drives.append(device) %}
 {%     endif %}