Update oic/sec/acl2
Update oic/sec/acl2

* Do not provision default ACEs for uninitialized resources.
* Refactored oc_sec_encode_acl().

Change-Id: I128eafea9eaedbc80b55ed580b120dbfb4a4b777
Signed-off-by: Kishen Maloor <c62ddea3cd661a9268bff15f07fc2229cdc9ac02@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/23509

iotivity/iotivity-constrained,iotivity/iotivity-constrained,iotivity/iotivity-constrained,iotivity/iotivity-constrained