fix conversion type missing

Conversion type is missing in some places which would cause some
unexcepted error. By using 'grep -rn "%(\w\+)[^\%a-z0-9\.\-]"',
we could find all cases of '%(variable_a)' and fix them.

Change-Id: Id4b376a92ad23db2cb5380be85d4fe937f1a5cb7
Closes-Bug: #1221026
Merge "fix conversion type missing"