[Fleet] [Synthetics] force auto upgrade of managed policies (#144949)

## Summary

Resolves https://github.com/elastic/kibana/issues/142896

Passes `{ force: true }` option when upgrading packages via the
`managed_package_policy` flow.

This ensures that Synthetics packages are able to be auto-upgraded via
the Fleet setup flow when a new package version is available, while
still restricting users from editing managed Synthetics packages from
the UI.

### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

x-pack/plugins/fleet/server/services/managed_package_policies.test.ts

@@ -92,7 +92,7 @@ describe('upgradeManagedPackagePolicies', () => {
       soClient,
       esClient,
       ['managed-package-id'],
-      undefined,
+      { force: true },
       packagePolicy,
       '1.0.0'
     );

x-pack/plugins/fleet/server/services/managed_package_policies.ts

@@ -118,7 +118,7 @@ async function upgradePackagePolicy(
       soClient,
       esClient,
       [packagePolicy.id],
-      undefined,
+      { force: true },
       packagePolicy,
       installedPackage.version
     );

x-pack/plugins/fleet/server/services/package_policy_service.ts

@@ -112,7 +112,7 @@ export interface PackagePolicyClient {
     soClient: SavedObjectsClientContract,
     esClient: ElasticsearchClient,
     ids: string[],
-    options?: { user?: AuthenticatedUser },
+    options?: { user?: AuthenticatedUser; force?: boolean },
     packagePolicy?: PackagePolicy,
     pkgVersion?: string
   ): Promise<UpgradePackagePolicyResponse>;

x-pack/test/api_integration/apis/synthetics/add_monitor_private_location.ts

@@ -222,7 +222,8 @@ export default function ({ getService }: FtrProviderContext) {
       );
 
       const packagePolicy = apiResponsePolicy.body.items.find(
-        (pkgPolicy: PackagePolicy) => pkgPolicy.id === newMonitorId + '-' + testFleetPolicyID
+        (pkgPolicy: PackagePolicy) =>
+          pkgPolicy.id === newMonitorId + '-' + testFleetPolicyID + '-default'
       );
 
       expect(packagePolicy).eql(undefined);
@@ -307,10 +308,74 @@ export default function ({ getService }: FtrProviderContext) {
             formatKibanaNamespace(SPACE_ID)
           )
         );
+        await supertestWithoutAuth
+          .delete(`/s/${SPACE_ID}${API_URLS.SYNTHETICS_MONITORS}/${monitorId}`)
+          .auth(username, password)
+          .set('kbn-xsrf', 'true')
+          .send()
+          .expect(200);
       } finally {
         await security.user.delete(username);
         await security.role.delete(roleName);
       }
     });
+
+    it('handles auto upgrading policies', async () => {
+      let monitorId = '';
+
+      const monitor = {
+        ...httpMonitorJson,
+        name: `Test monitor ${uuid.v4()}`,
+        [ConfigKey.NAMESPACE]: 'default',
+        locations: [
+          {
+            id: testFleetPolicyID,
+            label: 'Test private location 0',
+            isServiceManaged: false,
+          },
+        ],
+      };
+
+      try {
+        const apiResponse = await supertestAPI
+          .post(API_URLS.SYNTHETICS_MONITORS)
+          .set('kbn-xsrf', 'true')
+          .send(monitor);
+
+        monitorId = apiResponse.body.id;
+
+        const policyResponse = await supertestAPI.get(
+          '/api/fleet/package_policies?page=1&perPage=2000&kuery=ingest-package-policies.package.name%3A%20synthetics'
+        );
+
+        const packagePolicy = policyResponse.body.items.find(
+          (pkgPolicy: PackagePolicy) =>
+            pkgPolicy.id === monitorId + '-' + testFleetPolicyID + `-default`
+        );
+
+        expect(packagePolicy.package.version).eql('0.10.3');
+
+        await supertestAPI
+          .post('/api/fleet/epm/packages/synthetics/0.11.2')
+          .set('kbn-xsrf', 'true')
+          .send({ force: true });
+
+        await supertestAPI.post('/api/fleet/setup').set('kbn-xsrf', 'true').send().expect(200);
+        const policyResponseAfterUpgrade = await supertestAPI.get(
+          '/api/fleet/package_policies?page=1&perPage=2000&kuery=ingest-package-policies.package.name%3A%20synthetics'
+        );
+        const packagePolicyAfterUpgrade = policyResponseAfterUpgrade.body.items.find(
+          (pkgPolicy: PackagePolicy) =>
+            pkgPolicy.id === monitorId + '-' + testFleetPolicyID + `-default`
+        );
+        expect(packagePolicyAfterUpgrade.package.version).eql('0.11.2');
+      } finally {
+        await supertestAPI
+          .delete(API_URLS.SYNTHETICS_MONITORS + '/' + monitorId)
+          .set('kbn-xsrf', 'true')
+          .send()
+          .expect(200);
+      }
+    });
   });
 }