fixed pep8 issues in test/iframes.py
fixed pep8 issues in test/iframes.py

myself659/splinter,nikolas/splinter,gjvis/splinter,cobrateam/splinter,drptbl/splinter,underdogio/splinter,bmcculley/splinter,bmcculley/splinter,bubenkoff/splinter,gjvis/splinter,lrowe/splinter,objarni/splinter,underdogio/splinter,drptbl/splinter,lrowe/splinter,nikolas/splinter,bubenkoff/splinter,objarni/splinter,drptbl/splinter,gjvis/splinter,bmcculley/splinter,underdogio/splinter,nikolas/splinter,lrowe/splinter,objarni/splinter,cobrateam/splinter,myself659/splinter,cobrateam/splinter,myself659/splinter