[ZabbixAPIEmulator] Change the access modifier of the
parseEventGetParameter() function.
[ZabbixAPIEmulator] Change the variable type of eventIdFrom and
eventIdTill.

Because these variable is stored by JsonParserAgent::read() function.
This function parses by the int64_t type.
[ZabbixAPIEmulator] Add new function: setEventJsonData

This function set data to the format.
And, I change declaration the typedef of JsonData and JsonDataIterator
for this function.
[ZabbixAPIEmulator] Add set Json data.

This is working process.