Posture check: Azure Network Watcher Network Security Group (NSG) flow logs retention is less than 90 days
Query: ```config from cloud.resource where cloud.type = 'azure' AND api.name = 'azure-network-nsg-list' AND json.rule =  ' $.flowLogsSettings does not exist or  $.flowLogsSettings.enabled is false or  ($.flowLogsSettings.retentionPolicy.days does not equal 0 and $.flowLogsSettings.retentionPolicy.days less than 90) '```