Change log for BIND_DNS

Date	Changes
2024-02-24	Enhancement: - Added Grok patterns to parse unparse fields in the log. - If "principal.hostname" is present, then mapped "metadata.event_type" to "STATUS_UPDATE". - If "generic_message" is similar to "checkhints", then added a Grok pattern to extract "tar_host" and "response_ip". - If "generic_message" is similar to "update" or "zone transfer", then added a Grok pattern to extract "tar_host" and "action". - If "generic_message" is similar to "REFUSED unexpected RCODE", then added a Grok pattern to extract "tar_host", "src_ip", and "src_port". - If "generic_message" is similar to "check_mk", then added a Grok pattern to extract "src_app", "src_ip", "src_port", "response_ip" and "response_port".
2024-01-30	Enhancement - Added a Grok pattern to extract "query".
2023-12-20	Enhancement - Added Grok patterns to parse new format logs. - Mapped "pid" to "principal.process.pid". - Mapped "response_ip_2" to "target.ip". - If action value is similar to "denied" or "deny", mapped "security_result.action" to "BLOCK". - If action value is similar to "allowed" or "allow", mapped "security_result.action" to "ALLOW".
2023-09-19	Enhancement - Added Grok patterns to parse dropped logs.
2023-07-10	Enhancement - Added Grok pattern to handle syslog format logs.
2022-11-16	Enhancement - Added new Grok pattern for failing query-error logs. - Updated Grok patterns to parse logs which have additional data after port number. - Concatenated "query_int_1" and "query_int_2" to "query". - Mapped "dns_resp_2" and "error_loc" to "description". - Added conditions in "dhcp_qtype_mapping.include" to check for Types TYPE0, TYPE65521, TYPE65400 and converted them to integer values.
2022-04-22	Enhancement - Parsed logs that failed earlier