fix: enable mount options

[ZeroMagic]

What type of PR is this?
/kind bug

What this PR does / why we need it:
Each parameter in cmd should be separated with a blank. Otherwise, it won't work.

Which issue(s) this PR fixes:

Fixes #25

Special notes for your reviewer:

Release note:

fix: enable mount options

[andyzhangx]

is this required?

[marcoboffi]

Sorry but I don't understand very well how it's possible define mountOption.
I found in your code that tmp_path is set by default to /mnt. But how can I set other parameters (in particular file-cache-timeout-in-seconds)? With values file during driver installation with helm?

[andyzhangx]

Sorry but I don't understand very well how it's possible define mountOption.
I found in your code that tmp_path is set by default to /mnt. But how can I set other parameters (in particular file-cache-timeout-in-seconds)? With values file during driver installation with helm?

check example here: https://github.com/kubernetes-sigs/blobfuse-csi-driver/blob/master/deploy/example/storageclass-blobfuse-csi-mountoptions.yaml

[marcoboffi]

Great! But "-o uid=1000" or "allow_other" option are mandatory to use /mnt (Azure VM ephimeral disk) ?

[andyzhangx]

Great! But "-o uid=1000" or "allow_other" option are mandatory to use /mnt (Azure VM ephimeral disk) ?

@marcoboffi they are not relevant. do you have any other requirement on this?