Fix missing format specifier in ImagePropertiesFilter log message

Commit a52259e introduced some changes to debug log messages in the
ImagePropertiesFilter but with that came a bug due to a missing format
specifier.

Closes-Bug: #1253875

Change-Id: Ic60b7ba179bd43b80c500be084a1809b6b0b32ca
Merge "Fix missing format specifier in ImagePropertiesFilter log message"