Retires site AMS04 (#365)

The site has been down since Nov 2024 and there is little to no hope of us ever
recovering it at this point. I'm not even sure if the circuit still exists or
whether the contract may have even expired by now. In any case, there is no
point in having a site on the platform that has been down for 1+ years
virtually no hope of recovering it.

Author: nkinkade

retired.jsonnet

@@ -4,6 +4,7 @@ local retiredSites = {
   ams01: import 'sites/ams01.jsonnet',
   ams02: import 'sites/ams02.jsonnet',
   ams03: import 'sites/ams03.jsonnet',
+  ams04: import 'sites/ams04.jsonnet',
   ams06: import 'sites/ams06.jsonnet',
   ams07: import 'sites/ams07.jsonnet',
   ams08: import 'sites/ams08.jsonnet',

sites.jsonnet

@@ -1,7 +1,6 @@
 local sites = {
   // Physical sites.
   akl01: import 'sites/akl01.jsonnet',
-  ams04: import 'sites/ams04.jsonnet',
   ams05: import 'sites/ams05.jsonnet',
   ams11: import 'sites/ams11.jsonnet',
   arn02: import 'sites/arn02.jsonnet',

sites/ams04.jsonnet

@@ -43,5 +43,6 @@ sitesDefault {
   },
   lifecycle+: {
     created: '2019-01-01',
+    retired: '2026-01-13',
   },
 }