Add newline at end of postgresql.conf

compute_tools/src/pg_helpers.rs

@@ -109,6 +109,7 @@ impl PgOptionsSerialize for GenericOptions {
                 .map(|op| op.to_pg_setting())
                 .collect::<Vec<String>>()
                 .join("\n")
+                + "\n" // newline after last setting
         } else {
             "".to_string()
         }

compute_tools/tests/pg_helpers_tests.rs

@@ -49,7 +49,8 @@ max_replication_slots = 10
 neon.timeline_id = '2414a61ffc94e428f14b5758fe308e13'
 shared_preload_libraries = 'neon'
 synchronous_standby_names = 'walproposer'
-neon.pageserver_connstring = 'host=127.0.0.1 port=6400'"#
+neon.pageserver_connstring = 'host=127.0.0.1 port=6400'
+"#
         );
     }