Move the debug logs env variable to an attribute

Set it to 'sockethub*' for now as Nick advised, see
#91

site-cookbooks/sockethub/attributes/default.rb

@@ -2,3 +2,4 @@ node.default['sockethub']['port']                 = '10551'
 node.default['sockethub']['external_port']        = '10550'
 node.default['sockethub']['version']              = '3.1.4'
 node.default['sockethub']['nginx']['server_name'] = 'sockethub.kosmos.org'
+node.default['sockethub']['debug_logs']           = 'sockethub*'

site-cookbooks/sockethub/recipes/default.rb

@@ -48,6 +48,15 @@ execute "systemctl daemon-reload" do
   action :nothing
 end
 
+environment_variables = {
+  'PORT' => node['sockethub']['port'],
+  # Use the second database (index starts at 0)
+  'REDIS_URL' => "redis://localhost:6379/1"
+}
+unless node['sockethub']['debug_logs'].nil?
+  environment_variables['DEBUG'] = node['sockethub']['debug_logs']
+end
+
 template "/lib/systemd/system/sockethub_nodejs.service" do
   source 'nodejs.systemd.service.erb'
   owner 'root'
@@ -57,10 +66,7 @@ template "/lib/systemd/system/sockethub_nodejs.service" do
     user: "sockethub",
     group: "sockethub",
     entry: "/usr/bin/sockethub",
-    environment: { 'DEBUG' => '*',
-                   'PORT' => node['sockethub']['port'],
-                   # Use the second database (index starts at 0)
-                   'REDIS_URL' => "redis://localhost:6379/1" }
+    environment: environment_variables
   )
   notifies :run, "execute[systemctl daemon-reload]", :delayed
   notifies :restart, "service[sockethub_nodejs]", :delayed