Change in vdsm[master]: utils: Correct and faster list2cmdline

[Nir Soffer]

Nir Soffer has posted comments on this change.

Change subject: utils: Correct and faster list2cmdline
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Patch Set 5: Verified+1 Code-Review+1

Changes:

- Address Dan comments
- Fix quoting of single quote
- Remove the repr() which render the output of the new function useless

Verified on Fedora 19 system by activating/deactivating the host and inspecting the log. I tested that lvm commamnds can be copy and run in the shell correctly.