Fixes #5146 - Use localhost as default policy_server to prevent error messages without policy_server.dat file

[nperron]

Fixes #5146 - Use localhost as default policy_server to prevent error messages without policy_server.dat file

cf http://www.rudder-project.org/redmine/issues/5146

[nperron]

Oops, initial promises are missing

[nperron]

Oops, initial promises are missing

Done

[jooooooon]

First things first: please don't use IP addresses, use "localhost".

[nperron]

First things first: please don't use IP addresses, use "localhost".

I thought that 'localhost' was forbidden but I was wrong.

[nperron]

You ask me to cancel this PR in order to have a abortclass if policy_server.dat is absent just after a message to warn user of the issue.
The problem is that the error is displayed by cf-serverd, not cf-agent and no abortclass can be done for cf-serverd.
In fact two issues in one:

• cf-serverd will display 3 times an error message before to cancel its launch
• each error message will wait for a timout of 30s which will slow down a boot process

This is why I made this PR: to prevent cf-serverd to fail its launch caused by an absence of policy_server.dat.

Do you still think this is not a good idea ?

[jooooooon]

I understand. OK then, let's do this.

However, I think the default should be "rudder" to enable easier auto-configuration via a simple DNS record. Can you change that and then we'll merge this?