fix(terraform): gracefully handle EAI_AGAIN

lib/datasource/terraform-module/index.ts

@@ -2,7 +2,7 @@ import is from '@sindresorhus/is';
 import { logger } from '../../logger';
 import * as globalCache from '../../util/cache/global';
 import { Http } from '../../util/http';
-import { GetReleasesConfig, ReleaseResult } from '../common';
+import { DatasourceError, GetReleasesConfig, ReleaseResult } from '../common';
 
 export const id = 'terraform-module';
 
@@ -111,6 +111,11 @@ export async function getReleases({
       });
       return null;
     }
+    const failureCodes = ['EAI_AGAIN'];
+    // istanbul ignore if
+    if (failureCodes.includes(err.code)) {
+      throw new DatasourceError(err);
+    }
     logger.warn(
       { err, lookupName },
       'Terraform registry failure: Unknown error'

lib/datasource/terraform-provider/index.ts

 import { logger } from '../../logger';
 import * as globalCache from '../../util/cache/global';
 import { Http } from '../../util/http';
-import { GetReleasesConfig, ReleaseResult } from '../common';
+import { DatasourceError, GetReleasesConfig, ReleaseResult } from '../common';
 
 export const id = 'terraform-provider';
 
@@ -69,6 +69,11 @@ export async function getReleases({
       });
       return null;
     }
+    const failureCodes = ['EAI_AGAIN'];
+    // istanbul ignore if
+    if (failureCodes.includes(err.code)) {
+      throw new DatasourceError(err);
+    }
     logger.warn(
       { err, lookupName },
       'Terraform registry failure: Unknown error'