Fix issues with Keystone token adjustment playbook

+ Ignore fernet keys in .gitignore
+ Ansible throws up now on an integer
+ Fernet keys belong in the fernet-keys directory (I think this
  was a copy and paste error that was never patched.)

Change-Id: Ie6805a8852d638f4a2597d976815d749c41cfc06

.gitignore

@@ -6,6 +6,9 @@
 # Prevent hosts files from sneaking into the git repo
 ansible/hosts
 
+# Prevent any fernet keys from sneaking into git repo
+ansible/browbeat/roles/keystone-token/files/[0-9]
+
 log/*
 
 # Swap files

ansible/browbeat/roles/keystone-token/tasks/main.yml

@@ -81,10 +81,10 @@
   changed_when: false
 
 - name: Copy fernet keys
-  copy: src={{ item }} dest=/etc/yum.repos.d/
+  copy: src={{ item }} dest=/etc/keystone/fernet-keys/{{ item }}
   with_items:
-    - 0
+    - "0"
-    - 1
+    - "1"
   when: ("'{{ token_provider }}' == 'fernet'") and (inventory_hostname != groups['controller'][0])
 
 - name: Copy keystone type enforcement file