Drop time_to_live parameter

time_to_live was deprecated in liberty, let's drop it so we don't have
the warning anymore.

Change-Id: If36dc4ec2435aa8229b4efa6123fff9bdf668b37

examples/site.pp

@@ -82,10 +82,8 @@ node default {
   class { '::ceilometer::alarm::evaluator':
   }
 
-  # Purge 1 month old meters
-  class { '::ceilometer::expirer':
-    time_to_live => '2592000'
-  }
+  # Purge old meters
+  class { '::ceilometer::expirer': }
 
   # Install notification agent
   class { '::ceilometer::agent::notification':

manifests/expirer.pp

@@ -40,10 +40,6 @@
 #  [*weekday*]
 #    (optional) Defaults to '*'.
 #
-# [*time_to_live*]
-#   (optional) DEPRECATED. Number of seconds that samples are kept in the database.
-#   Should be a valid integer
-#   Defaults to '-1' to disable TTL and keep forever the datas.
 
 class ceilometer::expirer (
   $enable_cron = True,
@@ -52,20 +48,12 @@ class ceilometer::expirer (
   $monthday    = '*',
   $month       = '*',
   $weekday     = '*',
-  # Deprecated parameters
-  $time_to_live   = '-1',
 ) {
 
   include ::ceilometer::params
 
   Package<| title == 'ceilometer-common' |> -> Class['ceilometer::expirer']
 
-  warning('Parameter "time_to_live" is deprecated and will be removed in next release. Use metering_time_to_live in "ceilometer" class instead.')
-
-  ceilometer_config {
-    'database/time_to_live': value => $time_to_live;
-  }
-
   if $enable_cron {
     cron { 'ceilometer-expirer':
       command     => $ceilometer::params::expirer_command,

spec/classes/ceilometer_expirer_spec.rb

@@ -27,7 +27,7 @@ describe 'ceilometer::expirer' do
   end
 
   let :params do
-    { :time_to_live => '-1' }
+    {}
   end
 
   shared_examples_for 'ceilometer-expirer' do
@@ -62,10 +62,6 @@ describe 'ceilometer::expirer' do
       it { is_expected.to_not contain_cron('ceilometer-expirer') }
     end
 
-    it 'configures database section in ceilometer.conf' do
-      is_expected.to contain_ceilometer_config('database/time_to_live').with_value( params[:time_to_live] )
-    end
-
   end
 
   context 'on Debian platforms' do