RabbitMQ fails on new Ubuntu 18.04 install due to hostname issue

[Ed McDonagh]

Not sure if it is specific to Ubuntu as a LXD container, but by default the /etc/hosts file has the localhost entry but not the hostname entry. For some reason, without it RabbitMQ will refuse to start.

/etc/hosts needs to be updated to read:

127.0.0.1 localhost
127.0.1.1 nameofmyserver

[Ed McDonagh]

Added hosts update instructions for ref #649

→ <<cset d9f35afabf02>>

[Ed McDonagh]

Added refs #648, #649, #650 to changes. [skip ci] docs only

→ <<cset 1d02eb994959>>

[Ed McDonagh]

Merged in issue648etcDocsFor081 (pull request #214)

Fixes #647, #648, #649, #650, #654

→ <<cset d1b822782c6c>>

[Ed McDonagh]

Merged in release-0.8.1b2 (pull request #216)

Release 0.8.1b2

Some fixes, lots of docs. Refs #647, #646, #647, #648, #649, #650, #651, #652, #653, #654, #656

→ <<cset d5db3ea11366>>