access_control: Add missing ua_server.h include.
access_control: Add missing ua_server.h include.

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