Fixed not including pserver stats version entry in schema doc despite promises from last commit message!

Added version entry to provDB entries and updated schema doc

Author: giltirn

sphinx/source/io_schema/provdb_schema.rst

@@ -18,6 +18,7 @@ Function execution "events" in Chimbuko are labeled by a unique (for each proces
 
 | { *start of schema*
 |    **"__id"**: *Record index assigned by Sonata*,
+|    **"version"**: *The schema version*,
 |    **"call_stack"**:    *Function execution call stack (starting with anomalous function execution)*,
 |    [
 |        {

sphinx/source/io_schema/pserver_schema.rst

@@ -30,6 +30,7 @@ The full parameter server data packet JSON object has the following schema:
 ---------------------
 
 | {
+|    **'version'**: *The schema version*
 |    **'created_at'**: *UNIX timestamp given in milliseconds relative to epoch*
 |    **'anomaly_stats'**: *Statistics of anomalies  (object with schema given below). This field will not appear if no data has been received from the AD instances since the last send*
 |    **'anomaly_metrics'** : *Statistics of anomaly metrics by pid/rid/fid (array of objects with schema below).* 

src/ad/ADAnomalyProvenance.cpp

@@ -167,6 +167,7 @@ nlohmann::json ADAnomalyProvenance::getEventProvenance(const ExecData_t &call,
 							const unsigned long first_event_ts,
 							const unsigned long last_event_ts) const{
   nlohmann::json out = {
+      {"version", 2},
       {"pid", call.get_pid()},
       {"rid", call.get_rid()},
       {"tid", call.get_tid()},