Hide --registry flags behind a config

[avdv]

Renovate scans for registry URLs in .bazelrc files and tries to use all of them, but it does not support file: URLs and fails:

WARN: Host error (repository=tweag/rules_haskell)
       "hostType": "bazel",
       "packageName": "rules_haskell",
       "err": {
         "name": "UnsupportedProtocolError",
         "code": "ERR_UNSUPPORTED_PROTOCOL",
         "message": "Unsupported protocol \"file:\"",
         "stack": "UnsupportedProtocolError: Unsupported protocol \"file:\"\n    at normalizeArguments (/opt/containerbase/tools/renovate/37.49.3/node_modules/got/dist/source/core/index.js:521:23)\n    at got (/opt/containerbase/tools/renovate/37.49.3/node_modules/got/dist/source/create.js:112:39)\n    at gotTask (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/util/http/index.ts:96:27)\n    at httpTask (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/util/http/index.ts:208:16)\n    at Http.request (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/util/http/index.ts:225:20)\n    at Http.requestJson (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/util/http/index.ts:290:28)\n    at Http.getJson (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/util/http/index.ts:351:17)\n    at BazelDatasource.getReleases (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/modules/datasource/bazel/index.ts:44:50)\n    at callback (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/util/decorator/index.ts:55:34)\n    at /opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/util/cache/package/decorator.ts:119:24\n    at getRegistryReleases (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/modules/datasource/index.ts:77:15)\n    at huntRegistries (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/modules/datasource/index.ts:118:13)\n    at fetchReleases (/opt/containerbase/tools/renovate/37.49.3/node_modules/renovate/lib/modules/datasource/index.ts:291:15)",
         "options": {

However, it ignores any --registry values associated with a configuration.

So introduce a common configuration which is always enabled, but causes renovate to skip the --registry values.

[aherrmann]

it does not support file: URLs and fails:

Is there an upstream issue for this? This would be nice to see fixed in renovate eventually.

[avdv]

Is there an upstream issue for this? This would be nice to see fixed in renovate eventually.

Yes, I started a discussion (it's the way they handle issues): renovatebot/renovate#25624