nixos/tests: disable logrotate service by default in tests

nixos/modules/testing/test-instrumentation.nix

@@ -218,6 +218,8 @@ in
 
     services.displayManager.logToJournal = true;
 
+    services.logrotate.enable = lib.mkDefault false;
+
     # Make sure we use the Guest Agent from the QEMU package for testing
     # to reduce the closure size required for the tests.
     services.qemuGuest.package = pkgs.qemu_test.ga;

nixos/tests/logrotate.nix

@@ -16,17 +16,24 @@ import ./make-test-python.nix ({ pkgs, ... }: rec {
   };
 
   nodes = {
-    defaultMachine = { ... }: { };
+    defaultMachine = { ... }: {
+      services.logrotate.enable = true;
+    };
     failingMachine = { ... }: {
-      services.logrotate.configFile = pkgs.writeText "logrotate.conf" ''
+      services.logrotate = {
+        enable = true;
+        configFile = pkgs.writeText "logrotate.conf" ''
           # self-written config file
           su notarealuser notagroupeither
         '';
       };
+    };
     machine = { config, ... }: {
       imports = [ importTest ];
 
-      services.logrotate.settings = {
+      services.logrotate = {
+        enable = true;
+        settings = {
           # remove default frequency header and add another
           header = {
             frequency = null;
@@ -66,6 +73,7 @@ import ./make-test-python.nix ({ pkgs, ... }: rec {
         };
       };
     };
+  };
 
   testScript =
     ''