Change in vdsm[master]: Title: fix some code style consist with pep8

Zhou Zheng Sheng has posted comments on this change.

Change subject: Title: fix some code style consist with pep8
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Patch Set 3: Looks good to me, but someone else must approve

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Gerrit-MessageType: comment
Gerrit-Change-Id: I50cf61d9b7815cbdd5571930e3f9be59183a83f4
Gerrit-PatchSet: 3
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Changming Bai <baichm(a)linux.vnet.ibm.com&gt;
Gerrit-Reviewer: Changming Bai <baichm(a)linux.vnet.ibm.com&gt;
Gerrit-Reviewer: Zhou Zheng Sheng <zhshzhou(a)linux.vnet.ibm.com&gt;