【paddle.fleet】use the Floyd algorithm to find max path of meta optimizer

[wangxicoding]

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Others

PR changes

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Describe

Use the Floyd algorithm to find the max path of meta optimizer.
For example, if we have a meta a-->b-->c, a-->c, we can get the max path a-->b-->c.
Or if we have a meta a-->b-->c, a-->d, b-->d, we can get the max path a-->b-->d.

In addition to the strategies given in the #27643, the following strategies can also be combined.

Now the following strategies that can be combined：

import paddle.distributed.fleet as fleet
strategy = fleet.DistributedStrategy()

# 9. amp + recompute + lars
strategy.amp = True
strategy.recompute = True
strategy.lars = True

# 10. amp + recompute + lamb
strategy.amp = True
strategy.recompute = True
strategy.lamb = True

[paddle-bot-old]

Thanks for your contribution!
Please wait for the result of CI firstly. See Paddle CI Manual for details.

[guru4elephant]

LGTM