SPINEL_PROP_DATASET_SECURITY_POLICY value

Operational Dataset Security Policy Format: `SD` - No direct read or write It can only be included in one of the Dataset related properties below: SPINEL_PROP_THREAD_ACTIVE_DATASET SPINEL_PROP_THREAD_PENDING_DATASET SPINEL_PROP_THREAD_MGMT_SET_ACTIVE_DATASET SPINEL_PROP_THREAD_MGMT_SET_PENDING_DATASET SPINEL_PROP_THREAD_MGMT_GET_ACTIVE_DATASET SPINEL_PROP_THREAD_MGMT_GET_PENDING_DATASET Content is `S` : Key Rotation Time (in units of hour) `C` : Security Policy Flags (as specified in Thread 1.1 Section 8.10.1.15) `C` : Optional Security Policy Flags extension (as specified in Thread 1.2 Section 8.10.1.15). 0xf8 is used if this field is missing.