Plugins: Add module hash field to plugin model (#116119)

* add module hash field to plugin model

* fix tests

* fix lint issues

pkg/plugins/manager/loader/loader_test.go

@@ -216,10 +216,27 @@ func TestLoader_Load(t *testing.T) {
 							ExtensionPoints:   []plugins.ExtensionPoint{},
 						},
 					},
-					Class:           plugins.ClassExternal,
-					Module:          "public/plugins/test-app/module.js",
-					BaseURL:         "public/plugins/test-app",
-					FS:              mustNewStaticFSForTests(t, filepath.Join(parentDir, "testdata/includes-symlinks")),
+					Class:   plugins.ClassExternal,
+					Module:  "public/plugins/test-app/module.js",
+					BaseURL: "public/plugins/test-app",
+					FS:      mustNewStaticFSForTests(t, filepath.Join(parentDir, "testdata/includes-symlinks")),
+					Manifest: &plugins.PluginManifest{
+						Plugin:  "test-app",
+						Version: "1.0.0",
+						KeyID:   "7e4d0c6a708866e7",
+						Time:    1622547655175,
+						Files: map[string]string{
+							"dashboards/connections.json":  "bea86da4be970b98dc4681802ab55cdef3441dc3eb3c654cb207948d17b25303",
+							"dashboards/extra/memory.json": "7c042464941084caa91d0a9a2f188b05315a9796308a652ccdee31ca4fbcbfee",
+							"plugin.json":                  "c59a51bf6d7ecd7a99608ccb99353390c8b973672a938a0247164324005c0caf",
+							"symlink_to_txt":               "9f32c171bf78a85d5cb77a48ab44f85578ee2942a1fc9f9ec4fde194ae4ff048",
+							"text.txt":                     "9f32c171bf78a85d5cb77a48ab44f85578ee2942a1fc9f9ec4fde194ae4ff048",
+						},
+						ManifestVersion: "2.0.0",
+						SignatureType:   plugins.SignatureTypeGrafana,
+						SignedByOrg:     "grafana",
+						SignedByOrgName: "Grafana Labs",
+					},
 					Signature:       "valid",
 					SignatureType:   plugins.SignatureTypeGrafana,
 					SignatureOrg:    "Grafana Labs",