Deprecate log_icap and log_access configuration directives
The log_icap and log_access are not really needed to control requests logging.
Someone can use acls with access_log and icap_log configuration directives
for this purpose.
Also currently the requests denied for logging using the log_access access list
will not be accounted for in performance counters.
This patch:
- removes log_icap and log_access options from configuration file.
- adds the "stats_collection" access list to control performane counters
accounting.