Update Makefile to skip golint for Go1.4
Update Makefile to skip golint for Go1.4

Golint does not support Go 1.4, and the SDK needs to skip linting when
running tests using Go 1.4.

xibz/aws-sdk-go,radeksimko/aws-sdk-go,agworld/aws-sdk-go,calgaryscientific/aws-sdk-go,calgaryscientific/aws-sdk-go,agworld/aws-sdk-go,myshen/aws-sdk-go,myshen/aws-sdk-go,jjeffery/aws-sdk-go,zmarois/aws-sdk-go,yxd-hde/aws-sdk-go,jjeffery/aws-sdk-go,jasdel/aws-sdk-go,radeksimko/aws-sdk-go,xibz/aws-sdk-go,zmarois/aws-sdk-go,jjeffery/aws-sdk-go,calgaryscientific/aws-sdk-go,aws/aws-sdk-go,xibz/aws-sdk-go,yxd-hde/aws-sdk-go,myshen/aws-sdk-go,xibz/aws-sdk-go,agworld/aws-sdk-go,agworld/aws-sdk-go,zmarois/aws-sdk-go,yxd-hde/aws-sdk-go,radeksimko/aws-sdk-go,yxd-hde/aws-sdk-go,myshen/aws-sdk-go,zmarois/aws-sdk-go,radeksimko/aws-sdk-go,calgaryscientific/aws-sdk-go