Extract acceptance node setup to its own file

This is a pattern we use in Vox Pupuli. In fact, voxpupuli-acceptance
does this if it detects the file automatically. The biggest benefit is
that editors and linters can work on the file, which increases quality.

Author: ekohl

spec/setup_acceptance_node.pp

@@ -0,0 +1,23 @@
+if $facts['os']['name'] == 'Ubuntu' and $facts['os']['release']['major'] == '18.04' {
+  package { 'iproute2':
+    ensure => installed,
+  }
+}
+
+# needed for netstat, for serverspec checks
+if $facts['os']['family'] in ['SLES', 'SUSE'] {
+  package { 'net-tools-deprecated':
+    ensure   => 'latest',
+  }
+}
+
+if $facts['os']['family'] == 'RedHat' {
+  if versioncmp($facts['os']['release']['major'], '8') >= 0 {
+    $package = ['iproute', 'policycoreutils-python-utils']
+  } else {
+    $package = 'policycoreutils-python'
+  }
+  package { $package:
+    ensure => installed,
+  }
+}

spec/spec_helper_acceptance_local.rb

@@ -37,31 +37,7 @@ def pre_run
 end
 
 def install_dependencies
-  LitmusHelper.instance.apply_manifest <<~MANIFEST
-    if $facts['os']['name'] == 'Ubuntu' and $facts['os']['release']['major'] == '18.04' {
-      package { 'iproute2':
-        ensure => installed,
-      }
-    }
-
-    # needed for netstat, for serverspec checks
-    if $facts['os']['family'] in ['SLES', 'SUSE'] {
-      package { 'net-tools-deprecated':
-        ensure   => 'latest',
-      }
-    }
-
-    if $facts['os']['family'] == 'RedHat' {
-      if versioncmp($facts['os']['release']['major'], '8') >= 0 {
-        $package = ['iproute', 'policycoreutils-python-utils']
-      } else {
-        $package = 'policycoreutils-python'
-      }
-      package { $package:
-        ensure => installed,
-      }
-    }
-  MANIFEST
+  LitmusHelper.instance.apply_manifest(File.read(File.join(__dir__, 'setup_acceptance_node.pp')))
 end
 
 def postgresql_version