Varnish config fails due to illegal characters

[Marco Ceppi]

Using 1.11.3 of Juju core, adding a relation between varnish and my-discourse varnish reported 503 errors, attempting to restart varnish produces this error:

 * Stopping HTTP accelerator varnishd [OK ]
 * Starting HTTP accelerator varnishd [fail]
Message from VCC-compiler:
Identifier 'my-discourse0' contains illegal characters, use [0-9a-zA-Z_] only.
('input' Line 1 Pos 9)
backend my-discourse0 {
--------#############--

Running VCC-compiler failed, exit 1

To avoid this, I believe all - should be converted to _ which varnish accepts. In juju core _ is an illegal charm name, so this shouldn't produce any conflicts.

marco@home:~$ juju deploy varnish a_varnish
error: invalid service name "a_varnish"

[Jay R. Wren (evarlast)]

https://code.launchpad.net/~evarlast/charms/precise/varnish/hyphen-to-underscore/+merge/226734