Add support to remove horizon dashboards

The initial implemention assumed you wanted
to install dashboard. This adds support to
remove/uninstall dashboard with the resource.

Change-Id: Ie008d805a05d8152721220ffdf7c29f3afc65baa

manifests/dashboard.pp

@@ -20,12 +20,20 @@
 # This resource installs additional horizon dashboard which is not
 # shipped with the horizon packages, but as additional packages.
 #
+# == Parameters:
+#
+# [*ensure*]
+#   (Optional) The ensure state of the dashboard package.
+#   Defaults to present
+#
 # == Example:
 #
 # This will install the correct heat-dashboard package for your deployment.
 # horizon::dashboard { 'heat': }
 #
-define horizon::dashboard {
+define horizon::dashboard (
+  $ensure = 'present',
+) {
 
   $dashboard = downcase($name)
 
@@ -45,7 +53,7 @@ define horizon::dashboard {
   }
 
   ensure_packages($dashboard_package_name, {
-    'ensure'  => present,
+    'ensure'  => $ensure,
     'tag'     => ['horizon-dashboard-package']
   })
 }

releasenotes/notes/dashboard-remove-2b250155570ab317.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Added ``ensure`` parameter to ``horizon::dashboard`` resource which defaults
+    to ``present``. You can now set this to absent if you want to remove a horizon
+    dashboard package.

spec/defines/horizon_dashboard_spec.rb

@@ -24,11 +24,23 @@ describe 'horizon::dashboard' do
 
   shared_examples 'horizon::dashboard' do
     context 'with default' do
-      it {
-        is_expected.to contain_package(platform_params[:heat_dashboard_package_name]).with(
+      it { should contain_package(platform_params[:heat_dashboard_package_name]).with(
           :ensure => 'present',
-          :tag    => ['horizon-dashboard-package'])
-      }
+          :tag    => ['horizon-dashboard-package']
+      )}
+    end
+
+    context 'with absent' do
+      let :params do
+        {
+          :ensure => 'absent',
+        }
+      end
+
+      it { should contain_package(platform_params[:heat_dashboard_package_name]).with(
+        :ensure => 'absent',
+        :tag    => ['horizon-dashboard-package']
+      )}
     end
   end
 
@@ -38,21 +50,19 @@ describe 'horizon::dashboard' do
     end
 
     context 'with default' do
-      it {
-        is_expected.to contain_package('python3-heat-dashboard').with(
-          :ensure => 'present',
-          :tag    => ['horizon-dashboard-package'])
-      }
+      it { should contain_package('python3-heat-dashboard').with(
+        :ensure => 'present',
+        :tag    => ['horizon-dashboard-package']
+      )}
     end
   end
 
   shared_examples 'horizon::dashboard on Ubuntu' do
     context 'with default' do
-      it {
-        is_expected.to contain_package('python-heat-dashboard').with(
+      it { should contain_package('python-heat-dashboard').with(
           :ensure => 'present',
-          :tag    => ['horizon-dashboard-package'])
-      }
+          :tag    => ['horizon-dashboard-package']
+      )}
     end
   end