Fix the member list in the haproxy configuration files, it prevents
DELETED members to be in the list.
This patch is specific to the stable/train branch. The fix for other
releases was introduced in stable/ussuri but it is part of a patch
(Ic44019b8877f008e6d7a75ceed1b7fd958e051d0) that is not backportable to
stable/train. Only the diffs related to the jinja templates have been
included in this new commit.
One part of the fix was already backported to stable/train in
Ib7b083e1dfbfd7afcca870ed6f60a871b2e19253
Story 2008871
Task 42402
Change-Id: I4c85425a774594c52a0bb743fd5b787706201425