0023331: HttpsUtils sets invalid value with class Boolean into System.properties

diff --git a/src/org/openbravo/erpCommon/utility/HttpsUtils.java b/src/org/openbravo/erpCommon/utility/HttpsUtils.java
--- a/src/org/openbravo/erpCommon/utility/HttpsUtils.java
+++ b/src/org/openbravo/erpCommon/utility/HttpsUtils.java
@@ -223,7 +223,7 @@
           System.getProperties().setProperty("http.proxyPassword", password);
         }
       } else {
-        System.getProperties().put("proxySet", false);
+        System.getProperties().put("proxySet", "false");
         System.getProperties().remove("http.proxyHost");
         System.getProperties().remove("http.proxyPort");
         System.getProperties().remove("https.proxyHost");