fix: mount with 0777 in volume creation and deletion

[andyzhangx]

What type of PR is this?
/kind bug

What this PR does / why we need it:
fix: mount with 0777 in volume creation and deletion
fix: #840 (comment)

Which issue(s) this PR fixes:

Fixes #

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Special notes for your reviewer:

Release note:

none

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx

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• OWNERS [andyzhangx]

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[coveralls]

Pull Request Test Coverage Report for Build 10758293626

Details

• 30 of 33 (90.91%) changed or added relevant lines in 2 files are covered.
• 6 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.6%) to 78.905%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/smb/controllerserver.go	15	16	93.75%
pkg/smb/smb.go	15	17	88.24%

Files with Coverage Reduction	New Missed Lines	%
pkg/smb/controllerserver.go	6	75.2%

Totals
Change from base Build 10734014917:	0.6%
Covered Lines:	980
Relevant Lines:	1242

---

💛 - Coveralls

[andyzhangx]

/retest

[mpatlasov]

@andyzhangx , this PR re-introduced the issue #834 back. Any directory without write permissions cannot be removed even with 0777 in file_mode/dir_mode. This behavior is easy to observe w/o k8s:

# mount -t cifs -o dir_mode=0777,file_mode=0777,username=jane,password=zz,vers=3.1.1,addr=127.0.0.1,uid=0,gid=0 //127.0.0.1/share /mnt
# mkdir /mnt/dir
# chmod a-w /mnt/dir
# rmdir /mnt/dir
rmdir: failed to remove '/mnt/dir': Permission denied

Should we return that recursive chmod back?

[andyzhangx]

rmdir /mnt/dir

@mpatlasov this PR should fix the issue: #851

[mpatlasov]

rmdir /mnt/dir

@mpatlasov this PR should fix the issue: #851

Works for me, thanks!