Upgrade to Drush 9 and update the aliases to format

composer.json

@@ -15,7 +15,7 @@
         "drupal/drupal-extension": "^3.3",
         "behat/mink": "^1.7",
         "behat/mink-goutte-driver": "^1.2",
-        "drush/drush": "^8.0",
+        "drush/drush": "^9.0",
         "drupal/migrate_tools": "^4.0",
         "drupal/migrate_plus": "^4.0",
         "drupal/webform": "^5.0@RC",

drush/sites/.checksums/agaric-com-vm.site.md5

@@ -0,0 +1,3 @@
+# Checksum for converted Drush alias file agaric-com-vm.site.yml.
+# Delete this checksum file or modify agaric-com-vm.site.yml to prevent further updates to it.
+803cc897046ce4422a5628c88a6530d7

drush/sites/.checksums/agaric-com.site.md5

@@ -0,0 +1,3 @@
+# Checksum for converted Drush alias file agaric-com.site.yml.
+# Delete this checksum file or modify agaric-com.site.yml to prevent further updates to it.
+a5d814faf39c9eab916cdceb24df3c3c

drush/sites/.checksums/dev.site.md5

@@ -0,0 +1,3 @@
+# Checksum for converted Drush alias file dev.site.yml.
+# Delete this checksum file or modify dev.site.yml to prevent further updates to it.
+b40b85df89e92671805321f36aed4b2c

drush/sites/.checksums/test.site.md5

@@ -0,0 +1,3 @@
+# Checksum for converted Drush alias file test.site.yml.
+# Delete this checksum file or modify test.site.yml to prevent further updates to it.
+9b18b11dbee37c8d757cdb559107c438

drush/sites/agaric-com-vm.site.yml

@@ -0,0 +1,2 @@
+# This is a placeholder file used to track when agaric-com-vm.aliases.drushrc.php was converted.
+# If you delete agaric-com-vm.aliases.drushrc.php, then you may delete this file.

drush/sites/agaric-com.site.yml

@@ -0,0 +1,2 @@
+# This is a placeholder file used to track when agaric-com.aliases.drushrc.php was converted.
+# If you delete agaric-com.aliases.drushrc.php, then you may delete this file.

drush/sites/dev.site.yml

@@ -0,0 +1,3 @@
+dev:
+  root: /var/www/drutopia/web
+  uri: 'http://agaric-com.test/'

drush/sites/test.site.yml

@@ -0,0 +1,8 @@
+dev:
+  host: elizabeth.mayfirst.org
+  paths:
+    drush: /home/agaric_test/site/vendor/drush/drush
+    drush-script: /home/agaric_test/site/vendor/bin/drush
+  root: /home/agaric_test/site/web
+  uri: 'https://agaric-test.drutopia.org'
+  user: agaric_test