Fix string match

ansible/bootstrap.yml

@@ -10,9 +10,9 @@
 
     - name: Release name must start with lower case
       assert:
-        that: release_name is "/^M/" 
+        that: "'{{ release_name }}' is search('^[a-z]')"
         msg: >
-          "Release name should start with lower case {{ release_name }}"
+          "Release name ({{ release_name }}) should start with lower case."
 
 - name: Prepare nodes
   hosts: cluster