packaging: create /var/lib/evebox directory in debian after-install script

The debian package creates the evebox user with /var/lib/evebox as home
directory but doesn't actually create the directory. This causes issues
when the evebox services try to use EVEBOX_DATA_DIRECTORY=/var/lib/evebox.

Fixes #346

Author: jasonish

packaging/debian/after-install.sh

@@ -13,3 +13,10 @@ if ! /usr/bin/getent passwd ${USERNAME} > /dev/null; then
             --shell /usr/sbin/nologin \
             ${USERNAME}
 fi
+
+# Create the data directory if it doesn't exist
+if [ ! -d ${HOMEDIR} ]; then
+    mkdir -p ${HOMEDIR}
+    chown ${USERNAME}:${USERNAME} ${HOMEDIR}
+    chmod 750 ${HOMEDIR}
+fi