Add compress_image_layer to openapi spec

pageserver/src/http/openapi_spec.yml

@@ -1444,6 +1444,8 @@ components:
           type: integer
         trace_read_requests:
           type: boolean
+        compress_image_layer:
+          type: boolean
         heatmap_period:
           type: string
     TenantConfigResponse:

test_runner/regress/test_attach_tenant_config.py

@@ -188,6 +188,7 @@ def test_fully_custom_config(positive_env: NeonEnv):
             "max": 1000,
         },
         "trace_read_requests": True,
+        "compress_image_layer": True,
         "walreceiver_connect_timeout": "13m",
     }