(PE-40371) Add migration plan for standard architecture

This commit adds a migration plan which utilises backup, install and
restore plans to install and restore PE on new infrastructure with a
standard architecture.

This commit also introduces a new 'migration' option for backup and
restore plans, enabling a new migration plan.

Author: petergmurphy

functions/migration_opts_default.pp

@@ -7,6 +7,6 @@ function peadm::migration_opts_default () {
     'config'       => false,
     'orchestrator' => true,
     'puppetdb'     => true,
-    'rbac'         => true,
+    'rbac'         => false,
   }
 }

plans/backup.pp

@@ -12,7 +12,7 @@
   Peadm::SingleTargetSpec     $targets,
 
   # backup type determines the backup options
-  Enum['recovery', 'custom']  $backup_type = 'recovery',
+  Enum['recovery', 'custom', 'migration']  $backup_type = 'recovery',
 
   # Which data to backup
   Peadm::Recovery_opts        $backup = {},

plans/migrate.pp

@@ -0,0 +1,37 @@
+plan peadm::migrate (
+  Peadm::SingleTargetSpec $old_primary_host,
+  Peadm::SingleTargetSpec $new_primary_host,
+) {
+  peadm::assert_supported_bolt_version()
+
+  $backup_file = run_plan('peadm::backup', $old_primary_host, {
+      backup_type => 'migration',
+  })
+
+  download_file($backup_file['path'], 'backup', $old_primary_host)
+
+  $backup_filename = basename($backup_file['path'])
+  $remote_backup_path = "/tmp/${backup_filename}"
+  $current_dir = system::env('PWD')
+
+  upload_file("${current_dir}/downloads/backup/${old_primary_host}/${backup_filename}", $remote_backup_path, $new_primary_host)
+
+  $old_primary_target = get_targets($old_primary_host)[0]
+  $old_primary_password = peadm::get_pe_conf($old_primary_target)['console_admin_password']
+  $old_pe_conf = run_task('peadm::get_peadm_config', $old_primary_target).first.value
+  out::message("Old PE config: ${old_pe_conf}")
+  out::message("Installing PE ${old_pe_conf['pe_version']} on ${new_primary_host}=========================")
+  run_plan('peadm::install', {
+      primary_host                => $new_primary_host,
+      console_password            => $old_primary_password,
+      code_manager_auto_configure => true,
+      download_mode               => 'direct',
+      version                     => $old_pe_conf['pe_version'],
+  })
+
+  run_plan('peadm::restore', {
+      targets => $new_primary_host,
+      restore_type => 'migration',
+      input_file => $remote_backup_path,
+  })
+}

plans/restore.pp

@@ -12,7 +12,7 @@
   Peadm::SingleTargetSpec $targets,
 
   # restore type determines the restore options
-  Enum['recovery', 'recovery-db', 'custom'] $restore_type = 'recovery',
+  Enum['recovery', 'recovery-db', 'custom', 'migration'] $restore_type = 'recovery',
 
   # Which data to restore
   Peadm::Recovery_opts $restore = {},