Add mnaio_data_disk_suffix var to support NVMe partition naming

NVMe partitions generally show a `p` before the partition number,
causing the existing data disk partitioning script to fail. The
new var support changing the suffix to support alternative naming
schemes. The default remains '1' for backwards compatibility.

Change-Id: I7c0039ee13ba301c152424fc0b327195ec6a4367

multi-node-aio/README.rst

@@ -33,6 +33,14 @@ by exporting the extra var before running build.sh, eg:
     export MNAIO_ANSIBLE_PARAMETERS="-e mnaio_data_disk=sdb"
     ./build.sh
 
+NVMe partitions generally show a ``p`` before the partition number. The default
+suffix of ``1`` for ``sdb1`` can be changed to ``p1`` to support NVMe naming
+conventions using the ``mnaio_data_disk_suffix`` extra var shown here:
+
+ .. code-block:: bash
+     export MNAIO_ANSIBLE_PARAMETERS="-e mnaio_data_disk=nvme0n1 -e mnaio_data_disk_suffix=p1"
+    ./build.sh
+
 The playbooks will look for a volume group named "vg01", if this volume group
 exists no partitioning or setup on the data disk will take place. To effectively
 use this process for testing it's recommended that the host machine have at least

multi-node-aio/playbooks/group_vars/all.yml

@@ -107,6 +107,8 @@ images:
 
 # mnaio_data_disk: 'sdc'  # str - not required, set this to define a given data disk if no data disk
 #                                               is defined the largest unpartitioned disk will be used.
+# mnaio_data_disk_suffix: 1             # str  - not required, set this correspond to partition scheme
+
 mnaio_host_networks:
   dhcp:
     iface: 'vm-br-dhcp'                 # str  - required, interface name

multi-node-aio/playbooks/setup-host.yml

@@ -365,14 +365,14 @@
         - name: Prepare the data disk file system
           filesystem:
             fstype: ext4
-            dev: "/dev/{{ mnaio_data_disk }}1"
+            dev: "/dev/{{ mnaio_data_disk }}{{ mnaio_data_disk_suffix | default('1') }}"
             force: yes
           when:
             - _add_partition is changed
 
         - name: Mount the data disk
           mount:
-            src: "/dev/{{ mnaio_data_disk }}1"
+            src: "/dev/{{ mnaio_data_disk }}{{ mnaio_data_disk_suffix | default('1') }}"
             path: /data
             state: mounted
             fstype: ext4