new: [docker-host] added ``0k-charm`` installation

It is usually already installed as these scripts are meant to be
used from ``0k-charm`` binary itself. But for hand execution of
the scripts, and update reason, it is a good idea to take care
of it as any other utility.

precise/host/hooks/install.d/70-0k.sh

@@ -46,6 +46,26 @@ mkdir -p /opt/apps
 )
 
 
+##
+## Install 0k-charm
+##
+
+(
+    if [ -d "/opt/apps/0k-charm" ]; then
+        cd /opt/apps/0k-charm &&
+            git checkout master &&
+            git pull -r
+    else
+        cd /opt/apps &&
+        git clone $GIT_0K_CLONE_OPTIONS "$GIT_0K_BASE/0k/0k-charm.git"
+    fi
+
+    ln -sfn /opt/apps/0k-charm/bin/charm /usr/local/sbin/
+)
+
+
+apt-get install -y kal-shlib-charm </dev/null
+
 ##
 ## Install 0k-charms
 ##