fix log string in conversion type

By using 'grep -rn "%([a-zA-Z_]*) "', we could find all cases of
'%(variable)'. And we need add an 's' like '%(variable)s'.

Closes-Bug: #1220557
Change-Id: Ib28b7ddc5e5aabe2b82a499d9c242c1982e7f953
Merge "fix log string in conversion type"