feat: enforce alphabetical server block ordering

Adds test 13 to test.sh to verify that server blocks within each
sites-available file are sorted alphabetically by server_name
(LC_ALL=C; regex and wildcard entries excluded).

Fixes aria.conf and mommy.conf to conform: hyphenated names sort
before the bare domain in C locale ('-' < '.'), so trans-bot now
precedes trans, and mommy-slack now precedes mommy.

nginx/nginx/sites-available/aria.conf

@@ -34,6 +34,17 @@ server {
   }
 }
 
+server {
+  listen 443 ssl;
+  server_name trans-bot.nhcarrigan.com;
+  ssl_certificate /etc/letsencrypt/live/trans.nhcarrigan.com/fullchain.pem;
+  ssl_certificate_key /etc/letsencrypt/live/trans.nhcarrigan.com/privkey.pem;
+
+  location / {
+    return 301 https://aria.nhcarrigan.com;
+  }
+}
+
 server {
   listen 443 ssl;
   server_name trans.nhcarrigan.com;
@@ -45,14 +56,3 @@ server {
     proxy_pass http://0.0.0.0:5000;
   }
 }
-
-server {
-  listen 443 ssl;
-  server_name trans-bot.nhcarrigan.com;
-  ssl_certificate /etc/letsencrypt/live/trans.nhcarrigan.com/fullchain.pem;
-  ssl_certificate_key /etc/letsencrypt/live/trans.nhcarrigan.com/privkey.pem;
-
-  location / {
-    return 301 https://aria.nhcarrigan.com;
-  }
-}

nginx/nginx/sites-available/mommy.conf

@@ -11,19 +11,6 @@ server {
   }
 }
 
-server {
-  listen 443 ssl;
-  server_name mommy.nhcarrigan.com;
-  ssl_certificate /etc/letsencrypt/live/mommy.nhcarrigan.com/fullchain.pem;
-  ssl_certificate_key /etc/letsencrypt/live/mommy.nhcarrigan.com/privkey.pem;
-
-  location / {
-    proxy_set_header Host $host;
-    proxy_pass http://127.0.0.1:8008;
-    proxy_redirect off;
-  }
-}
-
 server {
   listen 443 ssl;
   server_name mommy-slack.nhcarrigan.com;
@@ -36,3 +23,16 @@ server {
     proxy_redirect off;
   }
 }
+
+server {
+  listen 443 ssl;
+  server_name mommy.nhcarrigan.com;
+  ssl_certificate /etc/letsencrypt/live/mommy.nhcarrigan.com/fullchain.pem;
+  ssl_certificate_key /etc/letsencrypt/live/mommy.nhcarrigan.com/privkey.pem;
+
+  location / {
+    proxy_set_header Host $host;
+    proxy_pass http://127.0.0.1:8008;
+    proxy_redirect off;
+  }
+}