Add groups to ssh hosts allowed principals

backend/src/ee/services/ssh-host/ssh-host-schema.ts

@@ -15,7 +15,24 @@ export const sanitizedSshHost = SshHostsSchema.pick({
 
 export const loginMappingSchema = z.object({
   loginUser: z.string().trim(),
-  allowedPrincipals: z.object({
-    usernames: z.array(z.string().trim()).transform((usernames) => Array.from(new Set(usernames)))
-  })
+  allowedPrincipals: z
+    .object({
+      usernames: z
+        .array(z.string().trim())
+        .transform((usernames) => Array.from(new Set(usernames)))
+        .optional(),
+      groups: z
+        .array(z.string().trim())
+        .transform((groups) => Array.from(new Set(groups)))
+        .optional()
+    })
+    .refine(
+      (data) => {
+        return (data.usernames && data.usernames.length > 0) || (data.groups && data.groups.length > 0);
+      },
+      {
+        message: "At least one username or group must be provided",
+        path: ["allowedPrincipals"]
+      }
+    )
 });