conf+qubes-release: enable updates repo

There are still some broken packages in base fc18, most of them have opened bugzilla tickets, so do not block updates when they will be released.
Also switch to metalink style mirrorlist URLs.

conf/qubes-kickstart.cfg

@@ -4,7 +4,8 @@
 # (@base is added by default unless you add --nobase to %packages)
 # (default groups for the configured repos are added by --default)
 
-repo --name=fedora --ignoregroups=true --mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-18&arch=x86_64
+repo --name=fedora --ignoregroups=true --mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-18&arch=$basearch
+repo --name=fedora-updates --ignoregroups=true --mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=updates-released-f18&arch=$basearch
 repo --name=installer --baseurl=file:///tmp/qubes-installer/yum/installer/
 repo --name=qubes-dom0 --baseurl=file:///tmp/qubes-installer/yum/qubes-dom0/
 repo --name=dom0-updates --baseurl=file:///tmp/qubes-installer/yum/dom0-updates/

qubes-release/fedora-updates.repo

@@ -3,7 +3,7 @@ name=Fedora 18 - x86_64 - Updates
 failovermethod=priority
 #baseurl=http://download.fedoraproject.org/pub/fedora/linux/updates/18/x86_64/
 mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=updates-released-f18&arch=x86_64
-enabled=0
+enabled=1
 gpgcheck=1
 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-18-primary