TST: skip some unreliable html truncations tests on travis
TST: skip some unreliable html truncations tests on travis

cbertinato/pandas,MJuddBooth/pandas,gfyoung/pandas,louispotok/pandas,GuessWhoSamFoo/pandas,winklerand/pandas,winklerand/pandas,pratapvardhan/pandas,Winand/pandas,louispotok/pandas,datapythonista/pandas,zfrenchee/pandas,linebp/pandas,jmmease/pandas,jreback/pandas,GuessWhoSamFoo/pandas,kdebrab/pandas,datapythonista/pandas,DGrady/pandas,jmmease/pandas,harisbal/pandas,Winand/pandas,linebp/pandas,pandas-dev/pandas,DGrady/pandas,GuessWhoSamFoo/pandas,cython-testbed/pandas,kdebrab/pandas,jmmease/pandas,pandas-dev/pandas,nmartensen/pandas,datapythonista/pandas,amolkahat/pandas,louispotok/pandas,GuessWhoSamFoo/pandas,pratapvardhan/pandas,nmartensen/pandas,pratapvardhan/pandas,DGrady/pandas,jreback/pandas,jreback/pandas,winklerand/pandas,harisbal/pandas,linebp/pandas,louispotok/pandas,jreback/pandas,DGrady/pandas,cython-testbed/pandas,cython-testbed/pandas,toobaz/pandas,zfrenchee/pandas,harisbal/pandas,rs2/pandas,jmmease/pandas,jreback/pandas,cbertinato/pandas,pandas-dev/pandas,linebp/pandas,kdebrab/pandas,winklerand/pandas,kdebrab/pandas,DGrady/pandas,cbertinato/pandas,nmartensen/pandas,cython-testbed/pandas,gfyoung/pandas,linebp/pandas,zfrenchee/pandas,dsm054/pandas,TomAugspurger/pandas,datapythonista/pandas,DGrady/pandas,pandas-dev/pandas,toobaz/pandas,winklerand/pandas,cbertinato/pandas,gfyoung/pandas,cbertinato/pandas,jorisvandenbossche/pandas,kdebrab/pandas,harisbal/pandas,MJuddBooth/pandas,MJuddBooth/pandas,zfrenchee/pandas,louispotok/pandas,jorisvandenbossche/pandas,dsm054/pandas,jmmease/pandas,zfrenchee/pandas,dsm054/pandas,toobaz/pandas,dsm054/pandas,TomAugspurger/pandas,jmmease/pandas,rs2/pandas,amolkahat/pandas,Winand/pandas,GuessWhoSamFoo/pandas,harisbal/pandas,rs2/pandas,gfyoung/pandas,rs2/pandas,dsm054/pandas,jorisvandenbossche/pandas,cython-testbed/pandas,jorisvandenbossche/pandas,nmartensen/pandas,gfyoung/pandas,MJuddBooth/pandas,amolkahat/pandas,nmartensen/pandas,MJuddBooth/pandas,amolkahat/pandas,Winand/pandas,pratapvardhan/pandas,toobaz/pandas,Winand/pandas,amolkahat/pandas,Winand/pandas,pratapvardhan/pandas,TomAugspurger/pandas,nmartensen/pandas,TomAugspurger/pandas,toobaz/pandas,linebp/pandas,winklerand/pandas