should not redirect when meet network err in cluster mode

[lintanghui]

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should not redirect req when meet netwrokr err in cluster, in cluster mode ,we default set maxRediect to 3, we should redirect when meet move ,ask or readonly err. but we should not redirect req when meet network err. but as code below:

err := c._processPipelineNode(ctx, node, cmds, failedCmds)
				if err == nil {
					return
				}
				if attempt < c.opt.MaxRedirects {
					if err := c.mapCmdsByNode(ctx, failedCmds, cmds); err != nil {
						setCmdsErr(cmds, err)
					}
				} else {
					setCmdsErr(cmds, err)
				}

when meet network err, it will retry all cmd, and if we also set maxRetry, it will cause multi retry req.

Expected Behavior

shoudl not redirect when meet network err in cluster mode

Current Behavior

retry all cmd when meet network err in cluster mode

Possible Solution

check err in cluster mode ,and only redirect in move|ask|readonly err

Steps to Reproduce

Context (Environment)

Detailed Description

Possible Implementation