Add file line number to vuln modal

* For the vuln modals add line number to the file path

Update unit tests

Add changelog

ee/app/assets/javascripts/security_dashboard/store/modules/vulnerabilities/mutations.js

@@ -81,7 +81,12 @@ export default {
       'url',
       vulnerability.project && vulnerability.project.full_path,
     );
-    Vue.set(state.modal.data.file, 'value', vulnerability.location && vulnerability.location.file);
+    Vue.set(
+      state.modal.data.file,
+      'value',
+      vulnerability.location &&
+        `${vulnerability.location.file}:${vulnerability.location.start_line}`,
+    );
     Vue.set(
       state.modal.data.identifiers,
       'value',

ee/changelogs/unreleased/line-number-vuln-modal.yml

+---
+title: Add file line number to vuln modal
+merge_request: 10265
+author:
+type: changed

ee/spec/javascripts/security_dashboard/store/vulnerabilities/mutations_spec.js

@@ -275,7 +275,9 @@ describe('vulnerabilities module mutations', () => {
       });
 
       it('should set the modal file', () => {
-        expect(state.modal.data.file.value).toEqual(vulnerability.location.file);
+        expect(state.modal.data.file.value).toEqual(
+          `${vulnerability.location.file}:${vulnerability.location.start_line}`,
+        );
       });
 
       it('should set the modal identifiers', () => {