Re: [sr-dev] [kamailio/kamailio] htable: add new functions sht_rm_name_re_pv and sht_rm_value_pv to support variables (#1121)

problem scenario is: need to clear htable cache dynamically (using an event-route + nsq message) but `sht_rm_name_re` and `sht_rm_value_re` do not support variables as parameters. solution in patch: allow variables by adding a 2nd parameter to each function if called with one parameter like `sht_rm_value_re("ha=>.*");` traditional behavior is executed. if passing a 2nd parameter like `sht_rm_value_re("$var(htable)", ".*$var(match)"); ` new behavior is executed which allows variables. I hope that makes sense.