Improvement, expansion of unpartitioned volumes supported also but to test

TODO, 14.12.2022: this change should be tested with a single volume system
preliminary tests shown that ext4 and btrfs entire volumes cam be resized

This patch applies on top the others about the same subject

- The expand last partition might support full volumes also, to test
- In expand last partition checking the size is useless
- If expand last partition fails, unsupervised systems reboot
- In expand last partition script btrfs support added
- In expand last partition wait for udev have finished

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Here in attachment.

Best regards, R-