docs: adds additional openstack docs

docs/user-guide/openstack-ironic.md

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+# OpenStack Baremetal (Ironic)
+
+## Setting baremetal node flavor
+
+Upstream docs: <https://docs.openstack.org/ironic/latest/install/configure-nova-flavors.html>
+
+When creating a flavor, make sure to include a property for the baremetal custom flavor,
+which in this example is `resources:CUSTOM_BAREMETAL_GP2SMALL=1`:
+
+``` bash
+openstack --os-cloud understack flavor create \
+    --ram 98304 --disk 445 --vcpus 32 --public \
+    --property resources:CUSTOM_BAREMETAL_GP2SMALL=1 \
+    --property resources:DISK_GB=0 \
+    --property resources:MEMORY_MB=0 \
+    --property resources:VCPU=0 gp2.small
+```
+
+Then set the baremetal node's resource class with the custom flavor:
+
+``` bash
+openstack baremetal node set 8d15b1b4-e3d8-46c3-bcaa-5c50cd5d1f5b --resource-class baremetal.gp2small
+```
+
+## Cleaning a baremetal node
+
+Create a baremetal raid config file for a raid1 config with the following contents:
+
+``` json title="raid1-config.json"
+{ "logical_disks":
+  [ { "controller": "RAID.SL.1-1",
+      "is_root_volume": true,
+      "physical_disks": [
+          "Disk.Bay.0:Enclosure.Internal.0-1:RAID.SL.1-1",
+          "Disk.Bay.1:Enclosure.Internal.0-1:RAID.SL.1-1"
+      ],
+      "raid_level": "1",
+      "size_gb": "MAX"
+    }
+  ]
+}
+```
+
+Apply the raid1 config from above:
+
+``` bash
+openstack --os-cloud=${OS_CLOUD} baremetal node set ${NODE_UUID} --target-raid-config raid1-config.json
+```
+
+Create another file with our node cleaning steps:
+
+``` json title="raid-clean-steps.json"
+[{
+  "interface": "raid",
+  "step": "delete_configuration"
+},
+{
+  "interface": "raid",
+  "step": "create_configuration"
+}]
+```
+
+Clean the node:
+
+``` bash
+openstack --os-cloud=${OS_CLOUD} baremetal node clean --clean-steps raid-clean-steps.json --disable-ramdisk ${NODE_UUID}
+```

docs/user-guide/openstack-placement.md

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+# OpenStack Placement
+
+## Query Placement usages
+
+Get an openstack token:
+
+``` bash
+TOKEN=`openstack token issue -f json | jq -r '.id'`
+```
+
+Make sure to change the placement url to your own environment:
+
+``` bash
+curl -k -H "X-Auth-Token: $TOKEN" https://placement.understack/resource_providers/ | jq
+```
+
+Further Placement API information: <https://docs.openstack.org/api-ref/placement/>