Fix duplicated and overwritten user keys

spec/classes/nova_cron_archive_deleted_rows_spec.rb:24:
warning: key :user is duplicated and overwritten on line 26
spec/classes/nova_cron_archive_deleted_rows_spec.rb:47:
warning: key :user is duplicated and overwritten on line 49
spec/classes/nova_cron_archive_deleted_rows_spec.rb:70:
warning: key :user is duplicated and overwritten on line 72
spec/classes/nova_cron_archive_deleted_rows_spec.rb:94:
warning: key :user is duplicated and overwritten on line 96

Change-Id: Iec772237b093c89fc24ed4b6e9d37429331b4788
(cherry picked from commit c7f44fde73)

spec/classes/nova_cron_archive_deleted_rows_spec.rb

@@ -21,7 +21,6 @@ describe 'nova::cron::archive_deleted_rows' do
       it 'configures a cron without until_complete' do
         is_expected.to contain_cron('nova-manage db archive_deleted_rows').with(
           :command     => "nova-manage db archive_deleted_rows  --max_rows #{params[:max_rows]}  >>#{params[:destination]} 2>&1",
-          :user        => 'nova',
           :environment => 'PATH=/bin:/usr/bin:/usr/sbin SHELL=/bin/sh',
           :user        => params[:user],
           :minute      => params[:minute],
@@ -44,7 +43,6 @@ describe 'nova::cron::archive_deleted_rows' do
       it 'configures a cron with until_complete' do
         is_expected.to contain_cron('nova-manage db archive_deleted_rows').with(
           :command     => "nova-manage db archive_deleted_rows  --max_rows #{params[:max_rows]} --until-complete >>#{params[:destination]} 2>&1",
-          :user        => 'nova',
           :environment => 'PATH=/bin:/usr/bin:/usr/sbin SHELL=/bin/sh',
           :user        => params[:user],
           :minute      => params[:minute],
@@ -67,7 +65,6 @@ describe 'nova::cron::archive_deleted_rows' do
       it 'configures a cron with purge' do
         is_expected.to contain_cron('nova-manage db archive_deleted_rows').with(
           :command     => "nova-manage db archive_deleted_rows --purge --max_rows #{params[:max_rows]}  >>#{params[:destination]} 2>&1",
-          :user        => 'nova',
           :environment => 'PATH=/bin:/usr/bin:/usr/sbin SHELL=/bin/sh',
           :user        => params[:user],
           :minute      => params[:minute],
@@ -91,7 +88,6 @@ describe 'nova::cron::archive_deleted_rows' do
       it 'configures a cron with all purge params' do
         is_expected.to contain_cron('nova-manage db archive_deleted_rows').with(
           :command     => "nova-manage db archive_deleted_rows --purge --max_rows #{params[:max_rows]} --until-complete >>#{params[:destination]} 2>&1",
-          :user        => 'nova',
           :environment => 'PATH=/bin:/usr/bin:/usr/sbin SHELL=/bin/sh',
           :user        => params[:user],
           :minute      => params[:minute],