Disable connecting external RSS during unit testing (#626)

The external RSS service is called during front-end unit tests. This mod disables the connection to external RSS services in these tests to avoid slowing down tests in environments where calling external services is prohibited.

* Disable connecting external RSS during unit testing

In 6370b5b connecting externa RSS was
disabled only in `Basic.t` and according to #45
it should be disabled in `PictureUpload.t` also. This mod fixes it.

Fixes: 6370b5b
Related: #45
Author-Change-Id: IB#1156232
Signed-off-by: Pawel Boguslawski <[email protected]>

* Update CHANGES.md
* Update PictureUpload.t

---------

Signed-off-by: Pawel Boguslawski <[email protected]>

scripts/test/Frontend/PictureUpload.t

@@ -23,7 +23,10 @@ my $JSONObject   = $Kernel::OM->Get('Kernel::System::JSON');
 # get helper object
 $Kernel::OM->ObjectParamAdd(
     'Kernel::System::UnitTest::Helper' => {
-        SkipSSLVerify => 1
+        SkipSSLVerify     => 1,
+        DisableSysConfigs => [
+            'DashboardBackend###0442-RSS',
+        ],
     },
 );
 my $HelperObject = $Kernel::OM->Get('Kernel::System::UnitTest::Helper');