Fix kvm multiple extraconfig bug

Author: abh1sar

server/src/main/java/com/cloud/vm/UserVmManagerImpl.java

@@ -6712,8 +6712,8 @@ protected void persistExtraConfigKvm(String decodedUrl, UserVm vm) {
         // validate config against denied cfg commands
         validateKvmExtraConfig(decodedUrl, vm.getAccountId());
         String[] extraConfigs = decodedUrl.split("\n\n");
+        int i = 1;
         for (String cfg : extraConfigs) {
-            int i = 1;
             String[] cfgParts = cfg.split("\n");
             String extraConfigKey = ApiConstants.EXTRA_CONFIG;
             String extraConfigValue;