stoney cloud: Switch to testing branch

Login as root and execute the following to switch a stoney cloud installation from stable (releases) to testing (pre-releases). If you are migrating from a FOSS-Cloud (or have an early stoney cloud), please read below.

branch="1.2-pre"

cd /usr/portage
git remote set-branches --add origin "${branch}"
git pull --rebase
git checkout "${branch}"
chown -R portage\: .

cd /var/lib/layman/foss-cloud
git remote set-branches --add origin "${branch}"
git pull --rebase
git checkout "${branch}"
chown -R portage\: .

Migrating from FOSS-Cloud

When coming from FOSS-Cloud or an early stoney cloud, it is necessary to switch the portage and portage-overlay to point to stoney cloud. To figure out, whether this is your case execute the following:

cd /usr/portage
git remote -v

cd /var/lib/layman/foss-cloud
git remote -v

which should give the following if you are on FOSS-Cloud (or have an early stone cloud)

~ # cd /usr/portage
~ # git remote -v
origin	https://github.com/FOSS-Cloud/portage.git (fetch)
origin	https://github.com/FOSS-Cloud/portage.git (push)
~ # cd /var/lib/layman/foss-cloud
~ # git remote -v
origin	https://github.com/FOSS-Cloud/portage-overlay.git (fetch)
origin	https://github.com/FOSS-Cloud/portage-overlay.git (push)
~ # 

If the output matches, run the following:

rm -rf /usr/portage /var/lib/layman/foss-cloud

git clone https://github.com/FOSS-Cloud/portage.git /usr/portage
git clone https://github.com/FOSS-Cloud/portage-overlay.git /var/lib/layman/foss-cloud

cd /usr/portage
git checkout 1.2-pre
cd /var/lib/layman/foss-cloud
git checkout 1.2-pre

chown -R portage\: /usr/portage /var/lib/layman/foss-cloud