[TASK] Check if a not trusted certificate has a CRL file
[TASK] Check if a not trusted certificate has a CRL file

 - Add functionality to identify the topmost parent certificate
   of a remoteCertificate
 - Check if any CRL file in the revocationList corresponds to
   the parent certificate
 - If there is no CRL file available for the corresponding parent
   certificate then return status code
   UA_STATUSCODE_BADCERTIFICATEISSUERREVOCATIONUNKNOWN
 - This resolves 002.js test case in Security Certificate
   Validation Conformance Unit

Change-Id: I1ac966973535042938add068c152796d65ee3b6e
Signed-off-by: Asish Ganesh <03a2186130a19eb8e4b7975ddc93bf2416795a3c@kalycito.com>

jpfr/open62541,JGrothoff/open62541,StalderT/open62541,open62541/open62541,JGrothoff/open62541,StalderT/open62541,jpfr/open62541,jpfr/open62541,StalderT/open62541,StalderT/open62541,jpfr/open62541,open62541/open62541,JGrothoff/open62541,JGrothoff/open62541,open62541/open62541,open62541/open62541