Fix the ugly base directory path

Remove the '..' in the path like:
/home/jenkins/workspace/gate-kolla-dsvm-deploy-centos-binary/tools/../ansible/inventory/all-in-one

TrivialFix

Change-Id: I80724a9e876ed1826c65e08b55cfa08124d70eb9

tools/kolla-ansible

@@ -10,7 +10,7 @@ function find_base_dir {
     elif [[ ${dir_name} == "/usr/local/bin" ]]; then
         BASEDIR=/usr/local/share/kolla
     else
-        BASEDIR="${dir_name}/.."
+        BASEDIR="$(dirname ${dir_name})"
     fi
 }