Bump min go to 1.10 in install.md
Bump min go to 1.10 in install.md

Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>

Closes: #1176
Approved by: rhatdan

projectatomic/buildah,rhatdan/buildah,ipbabble/buildah,ipbabble/buildah,nalind/buildah-1,projectatomic/buildah,nalind/buildah,TomSweeneyRedHat/buildah,rhatdan/buildah,TomSweeneyRedHat/buildah,projectatomic/buildah,nalind/buildah,nalind/buildah-1,rhatdan/buildah,nalind/buildah-1,TomSweeneyRedHat/buildah