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If a certificate expires, the user will need to update it. However,
because we only restart services at the end of a stack-update the
new certificate doesn't take effect until after puppet has run.
This is a problem because puppet makes OpenStack calls, which will
fail if the certificate is expired. In that case we never get to
the service restart so the stack is wedged until the user manually
restart haproxy.
This patch addresses the problem by reloading haproxy before puppet
runs. This is done in a pre-puppet script for pacemaker after pacemaker
is maintenance mode because we need to make sure it happens after all of
the certs have been installed on the controllers, but before puppet
runs.
For non-pacemaker, haproxy is simply reloaded.
Change-Id: Id5ed05b3a20d06af8ae7a3d6f859b03399b0d77d
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Ben Nemec