Pylint warnings.

Pylint warnings.

C:139,8:Zypp._zyppQueryPackage: Comma not followed by a space
        query.addAttribute(zypp.SolvAttr.name,pkg)
                                             ^^
C:146,8:Zypp._splitPkgString: Comma not followed by a space
        sp = pkg.rsplit(".",1)
                           ^^
C:213,12:Zypp.selectPackage: Comma not followed by a space
            q.addAttribute(zypp.SolvAttr.name,pattern)
                                             ^^
C:217,12:Zypp.selectPackage: Comma not followed by a space
            q.addAttribute(zypp.SolvAttr.name,name)
                                             ^^
C:221,12:Zypp.selectPackage: Comma not followed by a space
            q.addAttribute(zypp.SolvAttr.name,pkg)
                                             ^^
W: 19,0: Unused import sys
W: 35,0: Unused import BaseImageCreator
W: 20,0: Unused import re

Change-Id: Ie6bdff4de495e93b0dd534c276cb77d5270db114