Add more granular boot-from-volume envs

There may be situations where it is useful to boot only the
undercloud or only the baremetal nodes from volume.  This commit
adds environment files to enable that.

doc/source/deploy/environment-index.rst

@@ -82,6 +82,15 @@ the host cloud, but at the cost of potential inconsistency if the state
 of a baremetal instance is changed without using the BMC.
 
 
+Boot Baremetal Instances from Volume
+------------------------------------
+
+**File:** environments/boot-baremetal-from-volume.yaml
+
+**Description:** Boot the baremetal instances from Cinder volumes instead of
+ephemeral storage.
+
+
 Boot Undercloud and Baremetal Instances from Volume
 ---------------------------------------------------
 
@@ -91,6 +100,15 @@ Boot Undercloud and Baremetal Instances from Volume
 ephemeral storage.
 
 
+Boot Undercloud Instance from Volume
+------------------------------------
+
+**File:** environments/boot-undercloud-from-volume.yaml
+
+**Description:** Boot the undercloud instance from a Cinder volume instead of
+ephemeral storage.
+
+
 Create a Private Network
 ------------------------
 

environments/boot-baremetal-from-volume.yaml

@@ -0,0 +1,17 @@
+# *******************************************************************
+# This file was created automatically by the sample environment
+# generator. Developers should use `tox -e genconfig` to update it.
+# Users are recommended to make changes to a copy of the file instead
+# of the original, if any customizations are needed.
+# *******************************************************************
+# title: Boot Baremetal Instances from Volume
+# description: |
+#   Boot the baremetal instances from Cinder volumes instead of
+#   ephemeral storage.
+parameter_defaults:
+  # The size of the baremetal instance volumes
+  # Type: number
+  baremetal_volume_size: 41
+
+resource_registry:
+  OS::OVB::ServerPair: ../templates/virtual-baremetal-servers-volume.yaml

environments/boot-undercloud-from-volume.yaml

@@ -0,0 +1,17 @@
+# *******************************************************************
+# This file was created automatically by the sample environment
+# generator. Developers should use `tox -e genconfig` to update it.
+# Users are recommended to make changes to a copy of the file instead
+# of the original, if any customizations are needed.
+# *******************************************************************
+# title: Boot Undercloud Instance from Volume
+# description: |
+#   Boot the undercloud instance from a Cinder volume instead of
+#   ephemeral storage.
+parameter_defaults:
+  # The size of the volume for the undercloud instance
+  # Type: number
+  undercloud_volume_size: 50
+
+resource_registry:
+  OS::OVB::UndercloudEnvironment: ../templates/undercloud-volume.yaml

sample-env-generator/environments.yaml

@@ -183,6 +183,30 @@ environments:
     resource_registry:
       OS::OVB::UndercloudEnvironment: ../templates/undercloud-volume.yaml
       OS::OVB::ServerPair: ../templates/virtual-baremetal-servers-volume.yaml
+  -
+    name: boot-baremetal-from-volume
+    title: Boot Baremetal Instances from Volume
+    description: |
+      Boot the baremetal instances from Cinder volumes instead of
+      ephemeral storage.
+    files:
+      templates/virtual-baremetal-servers-volume.yaml:
+        parameters:
+          - baremetal_volume_size
+    resource_registry:
+      OS::OVB::ServerPair: ../templates/virtual-baremetal-servers-volume.yaml
+  -
+    name: boot-undercloud-from-volume
+    title: Boot Undercloud Instance from Volume
+    description: |
+      Boot the undercloud instance from a Cinder volume instead of
+      ephemeral storage.
+    files:
+      templates/undercloud-volume.yaml:
+        parameters:
+          - undercloud_volume_size
+    resource_registry:
+      OS::OVB::UndercloudEnvironment: ../templates/undercloud-volume.yaml
   -
     name: bmc-use-cache
     title: Enable Instance Status Caching in BMC