Using service ssh restart for Ubuntu, Debian

Fix Rubocop

lib/beaker/host/unix/exec.rb

@@ -278,6 +278,8 @@ def clear_env_var key
   # @return [Result] result of restarting the SSH service
   def ssh_service_restart
     case self['platform']
+    when /debian|ubuntu/
+      exec(Beaker::Command.new("systemctl restart ssh"))
     when /(el|centos|redhat|oracle|scientific)-[0-6]/
       exec(Beaker::Command.new("/sbin/service sshd restart"))
     when /solaris/
@@ -302,7 +304,7 @@ def ssh_permit_user_environment
       directory = tmpdir
       exec(Beaker::Command.new("echo 'PermitUserEnvironment yes' | cat - /etc/ssh/sshd_config > #{directory}/sshd_config.permit"))
       exec(Beaker::Command.new("mv #{directory}/sshd_config.permit /etc/ssh/sshd_config"))
-      exec(Beaker::Command.new("echo '' >/etc/environment")) if /ubuntu-2(0|2).04/.match?(self['platform'])
+      exec(Beaker::Command.new("echo '' >/etc/environment")) if self['platform'].include?('ubuntu')
     when /(free|open)bsd/
       exec(Beaker::Command.new("sudo perl -pi -e 's/^#?PermitUserEnvironment no/PermitUserEnvironment yes/' /etc/ssh/sshd_config"), { :pty => true })
     else

spec/beaker/host/unix/exec_spec.rb

@@ -82,7 +82,9 @@ def to_s
         let(:ssh_command) { "echo 'PermitUserEnvironment yes' | cat - /etc/ssh/sshd_config > #{directory}/sshd_config.permit" }
         let(:ssh_move) { "mv #{directory}/sshd_config.permit /etc/ssh/sshd_config" }
 
-        PlatformHelpers::SYSTEMDPLATFORMS.each do |platform|
+        platforms = PlatformHelpers::SYSTEMDPLATFORMS + PlatformHelpers::DEBIANPLATFORMS
+
+        platforms.each do |platform|
           it "calls the correct commands for #{platform}" do
             opts['platform'] = platform
             expect(instance).to receive(:exec).twice
@@ -112,6 +114,15 @@ def to_s
           expect { instance.ssh_service_restart }.not_to raise_error
         end
       end
+
+      PlatformHelpers::DEBIANPLATFORMS.each do |platform|
+        it "calls the ssh service restart command for #{platform}" do
+          opts['platform'] = platform
+          expect(instance).to receive(:exec)
+          expect(Beaker::Command).to receive(:new).with("systemctl restart ssh")
+          expect { instance.ssh_service_restart }.not_to raise_error
+        end
+      end
     end
 
     describe '#prepend_commands' do

spec/helpers.rb

@@ -129,5 +129,5 @@ module PlatformHelpers
                         redhat
                         oracle
                         scientific
-                        archlinux].concat(DEBIANPLATFORMS)
+                        archlinux]
 end