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fix: add tail parser type to support containerd
The `containerd` runtime generate logs as a non-JSON string. When switched to `containerd` runtime, `fluentd` will fail to parse any non-JSON log message and produce a large amount of parse error messages in its container logs. Here is an open issue at `fluentd` repo: fluent/fluentd-kubernetes-daemonset#412 **docker** runtime (a valid JSON string) `{"log":"2023-05-02 20:17:16 +0000 [info]: #0 [filter_kube_metadata_host] stats - namespace_cache_size: 0, pod_cache_size: 0\n","stream":"stdout","time":"2023-05-02T20:17:16.666667387Z"}` **containerd** runtime (just a string) `2023-05-02T20:17:28.143532061Z stdout F 2023-05-02 20:17:28 +0000 [info]: #0 [filter_kube_metadata_host] stats - namespace_cache_size: 0, pod_cache_size: 0` Here is an example of a short entry from a `fluentd` container log. ``` 2023-05-02 19:51:40 +0000 [warn]: #0 [in_tail_fluentd_logs] pattern not matched: "2023-05-02T19:51:17.411234908Z stdout F \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"" ```
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