Add nginx 1.11.7, remove nginx 1.11.6
Add nginx 1.11.7, remove nginx 1.11.6

source url: http://nginx.org/download/nginx-1.11.7.tar.gz, source gpg-signature:
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[#136041771]

jockhip12/mybuildpack,SaberZaabouti/myBuildpack,cloudfoundry/staticfile-buildpack,SaberZaabouti/myBuildpack,jockhip12/mybuildpack,dhaywael/static-buildpack,dhaywael/static-buildpack,jockhip12/mybuildpack,cloudfoundry/staticfile-buildpack,SaberZaabouti/myBuildpack,cloudfoundry/staticfile-buildpack,dhaywael/static-buildpack,SaberZaabouti/myBuildpack,jockhip12/mybuildpack,cloudfoundry/staticfile-buildpack,dhaywael/static-buildpack,dhaywael/static-buildpack,SaberZaabouti/myBuildpack,jockhip12/mybuildpack