Add endpoint override for eu-isoe-* region (#4619)

Author: trivikr

.changes/next-release/bugfix-Endpoints-52ee1372.json

@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "Endpoints",
+  "description": "Add endpoint override for eu-isoe-* region"
+}

lib/region_config_data.json

@@ -6,6 +6,7 @@
     "cn-*/*": {
       "endpoint": "{service}.{region}.amazonaws.com.cn"
     },
+    "eu-isoe-*/*": "euIsoe",
     "us-iso-*/*": "usIso",
     "us-isob-*/*": "usIsob",
     "*/budgets": "globalSSL",
@@ -243,6 +244,9 @@
       "endpoint": "{service}.{region}.amazonaws.com",
       "signatureVersion": "s3"
     },
+    "euIsoe": {
+      "endpoint": "{service}.{region}.cloud.adc-e.uk"
+    },
     "usIso": {
       "endpoint": "{service}.{region}.c2s.ic.gov"
     },