fix(identity): remove default for syncSource

To make the create method more consistent with the
guidelines,
this commit removes the default value from the `syncSource` parameter.

An Identity will be created as sync source,
when the associated account is created using an external provider.

Signed-off-by: David Mehren <git@herrmehren.de>

src/identity/identity.service.ts

@@ -36,7 +36,7 @@ export class IdentityService {
    * @return {Identity} the new local identity
    */
   async createLocalIdentity(user: User, password: string): Promise<Identity> {
-    const identity = Identity.create(user, ProviderType.LOCAL);
+    const identity = Identity.create(user, ProviderType.LOCAL, false);
     identity.passwordHash = await hashPassword(password);
     return await this.identityRepository.save(identity);
   }