Even though this file ends up in the /tmp directory, for readability
it's good to point out that server.pem is not necessarily the
certificate for a server, but can be a CA certificate which is
trusted if this option is used.
Change-Id: Iea27a702a844456e4472957438f75ed3819d62ca
This commits provides support to add certificate while
building the image using ironic-agent element. The
certificate can be CA certificate or self-signed certificate.
The certificate is set to the environment variable
'DIB_IPA_CERT' which in turn is used by the ironic-agent
element while building the image.
Change-Id: I648f7934d4787dcc3030885cfca771b642a9595e