Add temporary Ubuntu Artful support

Adds temporary support for Ubuntu Artful while we wait to get packages
up, after we do get packages up we should delete the lines denoted

Signed-off-by: Eli Uriegas <eli.uriegas@docker.com>

Jenkinsfile

@@ -10,6 +10,7 @@ def verifyTargets = [
   'x86_64-verify-install-ubuntu-trusty',
   'x86_64-verify-install-ubuntu-xenial',
   'x86_64-verify-install-ubuntu-zesty',
+  'x86_64-verify-install-ubuntu-artful',
 ]
 
 def armhfverifyTargets = [

Makefile

@@ -1,5 +1,5 @@
 SHELL:=/bin/bash
-DISTROS:=centos-7 fedora-25 fedora-26 debian-wheezy debian-jessie debian-stretch ubuntu-trusty ubuntu-xenial ubuntu-yakkety ubuntu-zesty
+DISTROS:=centos-7 fedora-25 fedora-26 debian-wheezy debian-jessie debian-stretch ubuntu-trusty ubuntu-xenial ubuntu-yakkety ubuntu-zesty ubuntu-artful
 VERIFY_INSTALL_DISTROS:=$(addprefix x86_64-verify-install-,$(DISTROS))
 CHANNEL_TO_TEST?=test
 SHELLCHECK_EXCLUSIONS=$(addprefix -e, SC1091 SC1117)

install.sh

@@ -41,10 +41,13 @@ x86_64-debian-stretch
 x86_64-ubuntu-trusty
 x86_64-ubuntu-xenial
 x86_64-ubuntu-zesty
+x86_64-ubuntu-artful
 s390x-ubuntu-xenial
 s390x-ubuntu-zesty
+s390x-ubuntu-artful
 ppc64le-ubuntu-xenial
 ppc64le-ubuntu-zesty
+ppc64le-ubuntu-artful
 aarch64-ubuntu-xenial
 armv6l-raspbian-jessie
 armv7l-raspbian-jessie
@@ -55,6 +58,7 @@ armv7l-debian-stretch
 armv7l-ubuntu-trusty
 armv7l-ubuntu-xenial
 armv7l-ubuntu-zesty
+armv7l-ubuntu-artful
 "
 
 mirror=''
@@ -352,6 +356,13 @@ do_install() {
 			else
 				pre_reqs="$pre_reqs software-properties-common"
 			fi
+
+			# TODO: DELETE HERE
+			if [ "$lsb_dist" = "ubuntu" ] && [ "$dist_version" = "artful" ]; then
+				dist_version="zesty"
+			fi
+			# TODO: DELETE HERE
+
 			if ! command -v gpg > /dev/null; then
 				pre_reqs="$pre_reqs gnupg"
 			fi