Fix function test working path handling
Fix function test working path handling

satish-suradkar/pyresttest,holdenweb/pyresttest,janusnic/pyresttest,svanoort/pyresttest,TimYi/pyresttest,suvarnaraju/pyresttest,wirewit/pyresttest,svanoort/pyresttest,sunyanhui/pyresttest,sunyanhui/pyresttest,satish-suradkar/pyresttest,MorrisJobke/pyresttest,alazaro/pyresttest,alazaro/pyresttest,janusnic/pyresttest,wirewit/pyresttest,netjunki/pyresttest,MorrisJobke/pyresttest,suvarnaraju/pyresttest,TimYi/pyresttest,netjunki/pyresttest,holdenweb/pyresttest