Use common class to manage apache service in beaker job

Depends-on: https://review.opendev.org/#/c/747935/
Change-Id: I5226895f14934b1fe11d832f37e3ae8a1084dbc8
(cherry picked from commit 9f18873519)

spec/acceptance/basic_panko_spec.rb

@@ -8,6 +8,7 @@ describe 'basic panko' do
       pp= <<-EOS
       include openstack_integration
       include openstack_integration::repos
+      include openstack_integration::apache
       include openstack_integration::mysql
       include openstack_integration::keystone
       include openstack_integration::panko