add comment to the install.sh,and update the method of 'OK' and 'Status'

[hurricane1988]

[ks-ci-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[ks-ci-bot]

@hurricane1988: PR needs rebase.

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[pixiake]

I think the namespace of images should not be changed from kubespheredev to kubesphere

[pixiake]

/hold