This change extends the Sorcery API to allow a wizard to be
told to explicitly reload objects or a specific object type
even if the wizard believes that nothing has changed.

This has been leveraged by res_pjsip and res_pjsip_acl to
reload endpoints and PJSIP ACLs when a named ACL changes.

ASTERISK-28697

Change-Id: Ib8fee9bd9dd490db635132c479127a4114c1ca0b