Adjust automated tests for security fix

One of the tests was asserting that the security issue exists.
Nice because that means that there is automated testing for at least
one of the changes for security.

Author: MarkEWaite

src/test/java/jp/ikedam/jenkins/plugins/extensible_choice_parameter/SystemGroovyChoiceListProviderJenkinsTest.java

@@ -223,7 +223,7 @@ void testDescriptor_doFillDefaultChoiceItemsWithoutPermission() throws Exception
                 descriptor.getDescriptorUrl() + "/fillDefaultChoiceItems/?script=" + properScript + "&sandbox=" + true
                         + "&usePredefinedVariables=" + false,
                 null);
-        assertEquals(HttpServletResponse.SC_OK, page.getWebResponse().getStatusCode());
+        assertEquals(HttpServletResponse.SC_NOT_FOUND, page.getWebResponse().getStatusCode());
 
         // configurer has access to the job but without Item/Configure permission => 403
         User configurer = User.getOrCreateByIdOrFullName("configurer");
@@ -234,7 +234,7 @@ void testDescriptor_doFillDefaultChoiceItemsWithoutPermission() throws Exception
                 p.getUrl() + descriptor.getDescriptorUrl() + "/fillDefaultChoiceItems/?script=" + properScript
                         + "&sandbox=" + true + "&usePredefinedVariables=" + false,
                 null);
-        assertEquals(HttpServletResponse.SC_FORBIDDEN, page.getWebResponse().getStatusCode());
+        assertEquals(HttpServletResponse.SC_NOT_FOUND, page.getWebResponse().getStatusCode());
     }
 
     @Test
@@ -326,7 +326,7 @@ void testDescriptor_doTestWithoutPermission() throws Exception {
                 descriptor.getDescriptorUrl() + "/test/?script=" + properScript + "&sandbox=" + true
                         + "&usePredefinedVariables=" + false,
                 null);
-        assertEquals(HttpServletResponse.SC_OK, page.getWebResponse().getStatusCode());
+        assertEquals(HttpServletResponse.SC_NOT_FOUND, page.getWebResponse().getStatusCode());
 
         // configurer has access to the job but without Item/Configure permission => 403
         User configurer = User.getOrCreateByIdOrFullName("configurer");
@@ -337,7 +337,7 @@ void testDescriptor_doTestWithoutPermission() throws Exception {
                 p,
                 descriptor.getDescriptorUrl() + "/test/?script=" + properScript + "&sandbox=" + true
                         + "&usePredefinedVariables=" + false);
-        assertEquals(HttpServletResponse.SC_FORBIDDEN, page.getWebResponse().getStatusCode());
+        assertEquals(HttpServletResponse.SC_NOT_FOUND, page.getWebResponse().getStatusCode());
     }
 
     @Test