Move site specific to a single hiera file

- No longer have to subsitute hiera files for almost
  each services to put creds in it (making update more
  difficult)
- This patch add a file sfcreds.yaml that own all site
  specific credentials.
- In the build dir we only have generated keys and that
  sfcreds files.
- Remove the useless copy of puppet manifest, hiera, modules
  from puppet-bootstraper directory to /etc/puppet. Instead
  put those files at the right place at image creation.
  This make managing the eDeploy exclude file easier.

Change-Id: Ice07601f007ba6359ac656c4519766eafdd63b70