upgrades: add LFS assert

upgrade/upgrade.sh

@@ -25,16 +25,24 @@ function cleanup_storage() {
 }
 
 function test_successful_upgrades() {
+    stop
     for config in default ; do
         log_info "using $config app.ini"
         upgrade_reset $config
 
-        for version in 1.18 1.19 1.20.2-0 1.20.3-0 1.20 1.21 $RELEASE_NUMBERS_AND_DEV ; do
+	version=1.18
+        log_info "run $version"
+        cleanup_storage
+	start $version
+	fixture_create
+	fixture_assert
+
+        for version in 1.19 1.20 1.21 $RELEASE_NUMBERS_AND_DEV ; do
+            stop
             log_info "run $version"
-            cleanup_storage
             start $version
             verify_storage
-            stop
+	    fixture_assert
         done
     done
 }