The scripts run by cloud-init for the master and minion nodes currently
write proxy environment variables into /bin/bashrc when they are defined.
These variables will only be introduced into the running environment
when a new bash shell is started. The /bin/sh used by the fragment
scripts will ignore /etc/bashrc, so the new shells invoked per fragment
will not have the http proxy variables present. This means that the
master/minion node deployment fails when behind an http proxy.
This patch adds explicit exports for HTTP_PROXY and HTTPS_PROXY when those
variables are defined, and not empty.
Task: 29863
Change-Id: Id05c90d5bf99d720ae6002b38d3291e364e1e0c4
2595fda3e3