fix: migrate hostType (#21432)

lib/config/migrations/custom/host-rules-migration.spec.ts

@@ -5,19 +5,42 @@ describe('config/migrations/custom/host-rules-migration', () => {
     expect(HostRulesMigration).toMigrate(
       {
         hostRules: [
-          { baseUrl: 'https://some.domain.com', token: '123test' },
-          { domainName: 'domain.com', token: '123test' },
+          {
+            hostType: 'dotnet',
+            baseUrl: 'https://some.domain.com',
+            token: '123test',
+          },
+          {
+            hostType: 'adoptium-java',
+            domainName: 'domain.com',
+            token: '123test',
+          },
           { domainName: 'domain.com/', token: '123test' },
-          { matchHost: 'domain.com/', token: '123test' },
+          { hostType: 'docker', matchHost: 'domain.com/', token: '123test' },
           { hostName: 'some.domain.com', token: '123test' },
         ],
       } as any,
       {
         hostRules: [
-          { matchHost: 'https://some.domain.com', token: '123test' },
-          { matchHost: 'domain.com', token: '123test' },
-          { matchHost: 'https://domain.com/', token: '123test' },
-          { matchHost: 'https://domain.com/', token: '123test' },
+          {
+            hostType: 'dotnet-version',
+            matchHost: 'https://some.domain.com',
+            token: '123test',
+          },
+          {
+            hostType: 'java-version',
+            matchHost: 'domain.com',
+            token: '123test',
+          },
+          {
+            matchHost: 'https://domain.com/',
+            token: '123test',
+          },
+          {
+            hostType: 'docker',
+            matchHost: 'https://domain.com/',
+            token: '123test',
+          },
           { matchHost: 'some.domain.com', token: '123test' },
         ],
       }

lib/config/migrations/custom/host-rules-migration.ts

 import is from '@sindresorhus/is';
 import type { HostRule } from '../../../types';
 import { AbstractMigration } from '../base/abstract-migration';
+import { migrateDatasource } from './datasource-migration';
 
 export class HostRulesMigration extends AbstractMigration {
   override readonly propertyName = 'hostRules';
@@ -25,6 +26,13 @@ export class HostRulesMigration extends AbstractMigration {
           continue;
         }
 
+        if (key === 'hostType') {
+          if (is.string(value)) {
+            newRule.hostType ??= migrateDatasource(value);
+          }
+          continue;
+        }
+
         if (
           key === 'endpoint' ||
           key === 'host' ||