Exclude forks from Group Security Dashboard filter

Per default GitLab includes forks (shared projects) in the Groups
Project API. With `with_shared=false` we exclude those from the API
calls.

ee/app/assets/javascripts/security_dashboard/store/modules/projects/actions.js

@@ -10,6 +10,7 @@ const getAllProjects = (url, page = '1', projects = []) =>
       page,
       include_subgroups: true,
       with_security_reports: true,
+      with_shared: false,
       order_by: 'path',
       sort: 'asc',
     },

ee/changelogs/unreleased/11560-exclude-forks-security-dashboard.yml

+---
+title: Exclude forks from Group Security Dashboard filter
+merge_request: 14667
+author:
+type: fixed

ee/spec/javascripts/security_dashboard/store/projects/actions_spec.js

@@ -27,8 +27,20 @@ describe('projects actions', () => {
     });
 
     describe('on success', () => {
+      const expectedParams = {
+        include_subgroups: true,
+        with_security_reports: true,
+        with_shared: false,
+      };
+
       beforeEach(() => {
-        mock.onGet(state.projectsEndpoint).replyOnce(200, data);
+        mock.onGet(state.projectsEndpoint).replyOnce(config => {
+          const hasExpectedParams = Object.keys(expectedParams).every(
+            param => config.params[param] === expectedParams[param],
+          );
+
+          return hasExpectedParams ? [200, data] : [400];
+        });
       });
 
       it('should dispatch the request and success actions', done => {