Make helm chart runnable

Setup script checks haveibeenpwned for weak passwords, and does not let
us continue the setup process.

zombi/mediawiki/templates/_helpers.tpl

@@ -57,6 +57,15 @@ Common environment values
 - name: WG_SERVER
   value: {{ .Values.wiki.server | quote }}
 
+- name: MEDIAWIKI_ADMIN_USER
+  value: "admin"
+
+- name: MEDIAWIKI_ADMIN_PASS
+  value: "hardcodedexamplepasswordthatwillbereplacedlater" # FIXME
+
+- name: ALLOW_PUBLIC_EDIT
+  value: "true"  # FIXME
+
 #WG_SITENAME="Test Wiki"
 #WG_SCRIPT_PATH=""
 #WG_SERVER="https://wiki.example.com"