[template/kadeploy] Fix typo

in yaml, it's : not =

lib/refrepo/gen/puppet/templates/kadeployg5k.conf.erb

@@ -132,8 +132,8 @@ automata:
 custom_variables:
 <%- end -%>
 <%- if data['force_tftp'] -%>
-  FORCE_TFTP="1"
+  FORCE_TFTP: "1"
 <%- end -%>
 <%- if data['no_module']-%>
-  PI_NO_MODULE = "1"
+  PI_NO_MODULE: "1"
 <%- end -%>