Fix unit tests incompatible with puppetlab-stdlib 8.0.0

Since puppetlabs-stdlib 8.0.0, ensure_packages automatically translates
'ensure => present'  to 'ensure => installed' and that translation
breaks existing assertions in unit tests.

Change-Id: Ibfda6f366e9082bb96fce993563afb7f327e1b74

spec/classes/manila_ganesha_spec.rb

@@ -41,7 +41,7 @@ describe 'manila::ganesha' do
   shared_examples_for 'manila::ganesha on RedHat' do
     it { is_expected.to contain_package('nfs-ganesha').with(
       :name   => 'nfs-ganesha',
-      :ensure => 'present',
+      :ensure => 'installed',
     ) }
   end
 

spec/defines/manila_backend_ganesha_spec.rb

@@ -53,7 +53,7 @@ describe 'manila::backend::ganesha' do
 
     it { is_expected.to contain_package('nfs-ganesha').with(
       :name   => 'nfs-ganesha',
-      :ensure => 'present',
+      :ensure => 'installed'
     ) }
   end