[feat]Support fluentd grok parser plugin

[vincent-vinf]

What this PR does / why we need it:

Support fluentd grok parser plugin

Which issue(s) this PR fixes:

Fixes #856

Does this PR introduced a user-facing change?

The following fields were added to the fluentd common.Parse
- 'grokPattern': The pattern of grok.
- 'customPatternPath': Path to the file that includes custom grok patterns.
- 'grokFailureKey': The key has grok failure reason.
- 'multiLineStartRegexp': The regexp to match beginning of multiline. This is only for "multiline_grok".
- 'grokPatternSeries': Specify grok pattern series set.
- 'grok': Grok Sections.

Additional documentation, usage docs, etc.:

- [Usage]: [Grok Parser for Fluentd](https://github.com/fluent/fluent-plugin-grok-parser)

[vincent-vinf]

To use grok, you need to install fluent-plugin-grok-parser in the image first.

FROM kubesphere/fluentd:v1.15.3
USER root
RUN fluent-gem install fluent-plugin-grok-parser
USER fluent

[wenchajun]

You should add the grok parser plugin here
https://github.com/fluent/fluent-operator/blob/master/cmd/fluent-watcher/fluentd/Dockerfile.amd64

[vincent-vinf]

You should add the grok parser plugin here https://github.com/fluent/fluent-operator/blob/master/cmd/fluent-watcher/fluentd/Dockerfile.amd64

Hello, there are multiple related dockerfiles here, which ones should I add grok-related configurations to?

[wenchajun]

The relevant ones should be added, respectively these files:
https://github.com/fluent/fluent-operator/blob/master/cmd/fluent-watcher/fluentd/base/Dockerfile#L33
https://github.com/fluent/fluent-operator/blob/master/cmd/fluent-watcher/fluentd/Dockerfile.amd64#L38C1-L38C1
https://github.com/fluent/fluent-operator/blob/master/cmd/fluent-watcher/fluentd/Dockerfile.arm64#L46
https://github.com/fluent/fluent-operator/blob/master/cmd/fluent-watcher/fluentd/Dockerfile.arm64.base#L36

[benjaminhuo]

@vincent-vinf Thanks for the PR, we're ready to merge it once the dockerfile is modified

[vincent-vinf]

@vincent-vinf Thanks for the PR, we're ready to merge it once the dockerfile is modified

The dockerfile has been modified >_<