Merge pull request #3170 from poettering/v230-preparation-fixes

make virtualization detection quieter, rework unit start limit logic, detect unit file drop-in changes correctly, fix autofs state propagation

src/basic/virt.c

@@ -280,7 +280,7 @@ static int detect_vm_uml(void) {
                 return VIRTUALIZATION_UML;
         }
 
-        log_debug("No virtualization found in /proc/cpuinfo (%s)", cpuinfo_contents);
+        log_debug("No virtualization found in /proc/cpuinfo.");
         return VIRTUALIZATION_NONE;
 }