Update to correct URL for Azure local_pck_url (#307)

Signed-off-by: lingyuji <[email protected]>

Author: lingyuj

QuoteGeneration/qcnl/linux/sgx_default_qcnl_azure.conf

@@ -15,7 +15,7 @@
 
   "retry_delay": 5,
 
-  "local_pck_url": "http://10.0.0.100/metadata/THIM/sgx/certification/v4/",
+  "local_pck_url": "http://169.254.169.254/metadata/THIM/sgx/certification/v4/",
 
   "pck_cache_expire_hours": 48,