RabbitMQ/Erlang do not properly determine available RAM when running in
containerised environment, plus default value for watermark is 0.4, which is
low for nodes running RabbitMQ only.
Some additional information:
https://www.rabbitmq.com/memory.html
Change-Id: I1738c66be0e698568881b2c64d5d456db851af4d
Depends-On: Iadd0529d166ef1dad1697215bbc181104a7b926e
Depends-On: Ibc6e8b91055f411b058505d14c2d83fbc826cdd4
Depending on security.tls.enabled switch disables or enables secured
communications between RabbitMQ, etcd and the rest of the world.
Change-Id: If9d376a7808e44a4845c78d3d6e4267bfb80848b
Depends-On: I574d64082e77f49024f49aa7b30c4f2f6cc044ac
Depends-On: I3f05ce795beade0af12eb3426df759a1af8806af
Depends-On: Ib4b3ea4da7c1f641b9ab0223226348de5eac94df
`etcd` is used as a backend for `autocluster`.
Co-Authored-By: Kirill Proskurin <kproskurin@mirantis.com>
Change-Id: I98bde66da4be517fb9e4442906620fae536d4f37