[Bug] Restore failed with error: get nothing from remote path: xxxx

[morningman]

Describe the bug

in be.INFO, error shows:

 get nothing from remote path: s3://cmy-repo/repo//__palo_repository_bos_repo2/__ss_s1/__ss_content/__db_10003/__tbl_10053/__part_10052/__idx_10054/__10055

This is because the path contains //, which can not be handled by S3 sdk correctly.

Some other bugs like:

java.lang.IllegalStateException: Invalid S3 URI: s3:/cmy-repo/repo/__palo_repository_bos_repo2

This is because s:/ is not a valid URL schema, should be s3://

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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