Upgrade boto3 to 1.2.6
Upgrade boto3 to 1.2.6

alex/warehouse,alex/warehouse,wlonk/warehouse,pypa/warehouse,dstufft/warehouse,karan/warehouse,dstufft/warehouse,karan/warehouse,alex/warehouse,wlonk/warehouse,pypa/warehouse,karan/warehouse,dstufft/warehouse,karan/warehouse,wlonk/warehouse,alex/warehouse,pypa/warehouse,dstufft/warehouse,alex/warehouse,pypa/warehouse,karan/warehouse