Comment 9 for bug 1625611

Hi, everyone.

I posted the procedure.
This information will do that useful for everyone.

Login Slave node.
And ....
---
root@node-1:~# gpg --recv-keys BCE5CC461FA22B08
gpg: requesting key 1FA22B08 from hkp server keys.gnupg.net
gpg: /root/.gnupg/trustdb.gpg: trustdb created
gpg: key 1FA22B08: public key "fuel-infra (Example key) <email address hidden>" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
root@node-1:~# apt-key list
/etc/apt/trusted.gpg
--------------------
pub 1024D/437D05B5 2004-09-12
uid Ubuntu Archive Automatic Signing Key <email address hidden>
sub 2048g/79164387 2004-09-12

pub 1024D/FBB75451 2004-12-30
uid Ubuntu CD Image Automatic Signing Key <email address hidden>

pub 4096R/C0B21F32 2012-05-11
uid Ubuntu Archive Automatic Signing Key (2012) <email address hidden>

pub 4096R/EFE21092 2012-05-11
uid Ubuntu CD Image Automatic Signing Key (2012) <email address hidden>

root@node-1:~# gpg -a --export BCE5CC461FA22B08 | apt-key add -
OK
root@node-1:~# apt-key list
/etc/apt/trusted.gpg
--------------------
pub 1024D/437D05B5 2004-09-12
uid Ubuntu Archive Automatic Signing Key <email address hidden>
sub 2048g/79164387 2004-09-12

pub 1024D/FBB75451 2004-12-30
uid Ubuntu CD Image Automatic Signing Key <email address hidden>

pub 4096R/C0B21F32 2012-05-11
uid Ubuntu Archive Automatic Signing Key (2012) <email address hidden>

pub 4096R/EFE21092 2012-05-11
uid Ubuntu CD Image Automatic Signing Key (2012) <email address hidden>

pub 2048R/1FA22B08 2015-07-21
uid fuel-infra (Example key) <email address hidden>
sub 2048R/6273AA09 2015-07-21

root@node-1:~#
----

Please execute all Slave node.