(3/5) [nexus] Add CRUD implementations for Affinity/Anti-Affinity Groups (#7445)

Pulled out of #7076

Adds auth structures for Affinity/Anti-Affinity Groups, as well as
datastore methods for implementing
CRUD (Create, Read, Update Delete) methods on these groups.

Author: smklein

common/src/api/external/mod.rs

@@ -293,6 +293,12 @@ impl<'a> From<&'a Name> for &'a str {
     }
 }
 
+impl From<Name> for String {
+    fn from(name: Name) -> Self {
+        name.0
+    }
+}
+
 /// `Name` instances are comparable like Strings, primarily so that they can
 /// be used as keys in trees.
 impl<S> PartialEq<S> for Name

nexus/auth/src/authz/api_resources.rs

@@ -714,6 +714,22 @@ authz_resource! {
     polar_snippet = InProject,
 }
 
+authz_resource! {
+    name = "AffinityGroup",
+    parent = "Project",
+    primary_key = Uuid,
+    roles_allowed = false,
+    polar_snippet = InProject,
+}
+
+authz_resource! {
+    name = "AntiAffinityGroup",
+    parent = "Project",
+    primary_key = Uuid,
+    roles_allowed = false,
+    polar_snippet = InProject,
+}
+
 authz_resource! {
     name = "InstanceNetworkInterface",
     parent = "Instance",

nexus/auth/src/authz/oso_generic.rs

@@ -125,6 +125,8 @@ pub fn make_omicron_oso(log: &slog::Logger) -> Result<OsoInit, anyhow::Error> {
         Disk::init(),
         Snapshot::init(),
         ProjectImage::init(),
+        AffinityGroup::init(),
+        AntiAffinityGroup::init(),
         Instance::init(),
         IpPool::init(),
         InstanceNetworkInterface::init(),