Hi,

I want to use the config option via foreman-rake to update the 'ignored_interface_identifiers' setting in Foreman but I'm facing some problems:

Tested on foreman 1.10.2:

$ /usr/sbin/foreman-rake -- config -k ignored_interface_identifiers
["lo"]
$ /usr/sbin/foreman-rake -- config -k ignored_interface_identifiers -v '["lo","awdl*"]'
"[\"lo\", \"awdl*\"]" 
$ /usr/sbin/foreman-rake -- config -k ignored_interface_identifiers
"[\"lo\", \"awdl*\"]" 

On this point, the foreman log shows some errors connected to the filtering of the interfaces:

2016-04-22 14:31:19 [app] [W] Action failed
 | NoMethodError: undefined method `map' for #<String:0x0000000931c938>
 | /usr/share/foreman/app/models/setting.rb:183:in `convert_array_to_regexp'
 | /usr/share/foreman/app/services/fact_parser.rb:166:in `ignored_interfaces'
 | /usr/share/foreman/app/services/fact_parser.rb:171:in `block in remove_ignored'

The way to solve it is to use the web UI and the setting is sanitized:

$ /usr/sbin/foreman-rake -- config -k ignored_interface_identifiers
["lo", "awdl*"]

I don't know if this is more connected to the foreman-rake or the implementation of the interface filtering.

Any feedback or tip is welcomed :)