Update liquid nova documentation

docs/liquids/nova.md

@@ -7,11 +7,25 @@ This liquid provides support for the compute service Nova.
 
 ## Service-specific configuration
 
-TODO
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `hypervisor_selection.hypervisor_type_pattern` | regexp | Only match hypervisors with a hypervisor_type attribute matching this pattern. |
+| `hypervisor_selection.required_traits` | []string | Only those hypervisors will be considered whose resource providers have all of the traits without `!` prefix and none of those with `!` prefix. |
+| `hypervisor_selection.shadowing_traits` | []string | If a hypervisor matches any of the rules in this configuration field (using the same logic as above for `required_traits`), the hypervisor will be considered shadowed. Its capacity will not be counted. |
+| `hypervisor_selection.aggregate_name_pattern` | regexp | Only match hypervisors that reside in an aggregate matching this pattern. If a hypervisor resides in multiple matching aggregates, an error is raised. |
+| `flavor_selection.required_extra_specs` | map[string]string | Only match flavors that have all of these extra specs. |
+| `flavor_selection.excluded_extra_specs` | map[string]string | Exclude flavors that have any of these extra specs. |
+| `pooled_cores_resource` | string | Name of the pooled cores resource. |
+| `pooled_instances_resource` | string | Name of the pooled instances resource. |
+| `pooled_ram_resource` | string | Name of the pooled ram resource. |
+| `with_subcapacities` | boolean | If true, subcapacities are reported. |
+| `with_subresources` | boolean | If true, subresources are reported. |
+| `binpack_behavior.score_ignores_cores`<br>`binpack_behavior.score_ignores_disk`<br>`binpack_behavior.score_ignores_ram` | boolean | If true, when ranking nodes during placement, do not include the respective dimension in the score. |
+| `ignore_traits` | []string | Traits that should be ignored during confirmation that all pooled flavors agree on which trait-match extra specs they use.  |
 
 ## Resources
 
-TODO: Description
+TODO: @majewsky please assist here
 
 | Resource | Unit | Capabilities |
 | --- | --- | --- |
@@ -22,3 +36,6 @@ TODO: Description
 | `server_group_members` | None | HasCapacity = false, HasQuota = true |
 | `instances_$FLAVOR_NAME` | None | HasCapacity = true, HasQuota = true |
 
+## Capacity calculation
+
+TODO: @majewsky please assist here