Change log for SURICATA_IDS

Date	Changes
2023-11-23	Enhancement - - Added a Grok pattern to parse newly ingested unparsed logs. - Added a null check before mapping "dns.rrname" to "dns_question.name". - Set "metadata.event_type" to "NETWORK_CONNECTION" for logs where "dns_rrname" is not present.
2023-08-24	Bug-Fix - Removed "TODO" comments from the parser.
2022-07-07	Enhancement - When "event_type" is equal to "snmp". - Mapped "in_iface" to "security_result.rule_labels". - Mapped "community_id" to "security_result.rule_labels". - Mapped "snmp.pdu_type" to "additional.fields". - Mapped "snmp.community" to "additional.fields". - Added for loop for "snmp.vars" and mapped it to "additional.fields". When "event_type" is equal to "rdp". - Mapped "sr_action" to "security_result.action". - Mapped "in_iface" to "security_result.rule_labels". - Mapped "community_id" to "security_result.rule_labels".
2022-06-13	Bug - Following changes are made to this parser- 1) Fixed unparsed logs of event_type "alert". 2) Mapped missing alert event_type fields. 3) Modified the parser to eliminate old format related to sdm.proto and changed the parser entirely as per udm.proto
2022-05-23	Enhancement - Added mapping for following alert fields: Mapped 'in_iface' to 'target.resource.attribute.labels'. Mapped 'vlan' to 'target.resource.attribute.labels'. Mapped 'src_ip' to 'principal.ip'. Mapped 'src_port' to 'principal.port'. Mapped 'dest_ip' to 'target.ip'. Mapped 'dest_port' to 'target.port'. Mapped 'proto' to 'network.ip_protocol'. Mapped 'alert.action' to 'security_result.action'. Mapped 'alert.gid' to 'target.resource.attribute.labels'. Mapped 'alert.signature_id' to 'target.resource.attribute.labels'. Mapped 'alert.rev' to 'target.resource.attribute.labels'. Mapped 'alert.signature' to 'target.resource.attribute.labels'. Mapped 'alert.category' to 'security_result.threat_name'. Mapped 'alert.severity' to 'security_result.severity'. Mapped 'alert.metadata.affected_product' to 'target.resource.attribute.labels'. Mapped 'alert.metadata.attack_target' to 'target.resource.attribute.labels'. Mapped 'alert.metadata.deployment' to 'target.resource.attribute.labels'. Mapped 'alert.metadata.former_category' to 'target.resource.attribute.labels'. Mapped 'alert.metadata.signature_severity' to 'target.resource.attribute.labels'. Mapped 'flow.pkts_toserver' to 'target.resource.attribute.labels'. Mapped 'flow.pkts_toclient' to 'target.resource.attribute.labels'. Mapped 'flow.bytes_toserver' to 'network.sent_bytes'. Mapped 'flow.bytes_toclient' to 'network.received_bytes'. Mapped 'payload' to 'additional.fields'. Mapped 'alert.metadata.updated_at' with the format "yyyy-MM-dd" to 'date'(metadata.event_timestamp).