Add grouping by hostname for the Packet inventory (#21069)

* Add grouping by hostname for the Packet inventory

* remove space after eol

contrib/inventory/packet_net.ini

@@ -37,6 +37,7 @@ replace_dash_in_groups = True
 # The packet inventory output can become very large. To manage its size,
 # configure which groups should be created.
 group_by_device_id = True
+group_by_hostname = True
 group_by_facility = True
 group_by_project = True
 group_by_operating_system = True

contrib/inventory/packet_net.py

@@ -175,6 +175,7 @@ class PacketInventory(object):
         # Configure which groups should be created.
         group_by_options = [
             'group_by_device_id',
+            'group_by_hostname',
             'group_by_facility',
             'group_by_project',
             'group_by_operating_system',
@@ -327,6 +328,12 @@ class PacketInventory(object):
             if self.nested_groups:
                 self.push_group(self.inventory, 'devices', device.id)
 
+        # Inventory: Group by device name (hopefully a group of 1)
+        if self.group_by_hostname:
+            self.push(self.inventory, device.hostname, dest)
+            if self.nested_groups:
+                self.push_group(self.inventory, 'hostnames', project.name)
+
         # Inventory: Group by project
         if self.group_by_project:
             self.push(self.inventory, project.name, dest)