add rule_type label to indicate rule type

[junotx]

What type of PR is this?

/kind bug

What this PR does / why we need it:

add rule_type label to the rule's labels to mark the rule type, and alerts generated by the rule will also be with this label

Which issue(s) this PR fixes:

Fixes #
#5827

Special notes for reviewers:

Does this PR introduced a user-facing change?

None

Additional documentation, usage docs, etc.:

[benjaminhuo]

/lgtm
/approve

[ks-ci-bot]

LGTM label has been added.

Git tree hash: dbd025acb507d71e6c6c552f4dfe523235fb3c46

[ks-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: benjaminhuo, junotx

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Needs approval from an approver in each of these files:

• OWNERS [benjaminhuo]

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[ImitationImmortal]

/cherrypick release-3.4

[wansir]

/cherrypick release-3.4

[ks-ci-bot]

@wansir: new pull request could not be created: failed to create pull request against kubesphere/kubesphere#release-3.4 from head ks-ci-bot:cherry-pick-5834-to-release-3.4: status code 422 not one of [201], body: {"message":"Validation Failed","errors":[{"resource":"PullRequest","code":"custom","message":"No commits between kubesphere:release-3.4 and ks-ci-bot:cherry-pick-5834-to-release-3.4"}],"documentation_url":"https://docs.github.com/rest/pulls/pulls#create-a-pull-request"}

In response to this:

/cherrypick release-3.4

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