[COOK-3135] Allow setting of members with default recipe without changing the template

Signed-off-by: Sean OMeara <someara@opscode.com>
Version bump to v1.6.0
Version bump to v1.6.1
Only call use_inline_resources if it's available
Provide some flexibility around configuration options for the global / defaults stanzas in haproxy.cfg
Removing build-essentials from haproxy install_source recipe since
they're on the ami

The removed package installs were in the original opscode cookbook but
we've had problems with chef instability due to apt server outages or
removal of packages. All of these dependencies are in our ami so we
don't need these. Incidentally haproxy is actually on the ami as well,
but we run this recipe for the template at the bottom. Everything else
is a no-op because prefix/sbin/haproxy and the haproxy user already
exist.