Print missing repos in downstream check script (#1869)

fixes #1816

Hit it during
#1854

It now prints links for the repos which don't have PRs for the commit at
all:


```
FAILURE pulumi/pulumi-auth0#493
FAILURE pulumi/pulumi-oci#431
MISSING https://github.com/pulumi/pulumi-opsgenie/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-splunk/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-libvirt/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-minio/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-kafka/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-aws/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-onelogin/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-cloudamqp/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-rabbitmq/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-newrelic/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-dnsimple/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-nomad/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-mailgun/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-mysql/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-sumologic/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-vsphere/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-keycloak/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-slack/actions/workflows/upgrade-bridge.yml
MISSING https://github.com/pulumi/pulumi-vault/actions/workflows/upgrade-bridge.yml
```

scripts/downstream_checks.py

@@ -7,14 +7,18 @@
 
 QUERY = """
 {
-  search(query: "is:open is:pr org:pulumi ???", type: ISSUE, first: 100) {
+  search(query: "is:pr org:pulumi ??? in:title", type: ISSUE, first: 100) {
     edges {
       node {
         ... on PullRequest {
           number
           url
           mergeable
           title
+          closed
+          repository {
+            name
+          }
           commits(last: 1) {
             nodes {
               commit {
@@ -40,11 +44,22 @@
 """
 
 
+def get_provider_map() -> dict[str, bool]:
+    resp = requests.get(
+        "https://raw.githubusercontent.com/pulumi/ci-mgmt/master/provider-ci/providers.json"
+    )
+    return {k: False for k in resp.json()}
+
+
 def get_title(query_result: Any) -> str:
     return str(query_result.get("node", {}).get("title", ""))
 
 
-def iterate_prs(query_result: Any) -> Iterator[tuple[str, list[Any]]]:
+def get_repo_name(query_result: Any) -> str:
+    return str(query_result.get("node", {}).get("repository", {}).get("name", ""))
+
+
+def iterate_prs(query_result: Any) -> Iterator[tuple[str, bool, list[Any], str, str]]:
     for e in query_result.get("data", {}).get("search", {}).get("edges", {}):
         title = get_title(e)
         checks = (
@@ -55,7 +70,9 @@ def iterate_prs(query_result: Any) -> Iterator[tuple[str, list[Any]]]:
             .get("nodes", [{}])
         )
         url = e["node"]["url"]
-        yield title, checks, url
+        repo = get_repo_name(e)
+        closed = e["node"]["closed"]
+        yield title, closed, checks, url, repo
 
 
 def get_sentinel_status(checks: list[Any]) -> str:
@@ -81,6 +98,10 @@ def get_gh_data(token: str, query: str) -> dict[str, Any]:
     return resp.json()
 
 
+def repo_actions_url(repo: str) -> str:
+    return "https://github.com/pulumi/pulumi-" + repo + "/actions/workflows/upgrade-bridge.yml"
+
+
 def main():
     ap = argparse.ArgumentParser()
     ap.add_argument("--hash", required=True)
@@ -93,17 +114,27 @@ def main():
 
     pr_suffix = f"Upgrade pulumi-terraform-bridge to {c}"
 
-    for pr_title, pr_checks, url in iterate_prs(r):
+    provider_map = get_provider_map()
+
+    for pr_title, closed, pr_checks, url, repo in iterate_prs(r):
         if not pr_title.endswith(pr_suffix):
             continue
 
+        provider_map[repo.removeprefix("pulumi-")] = True
+
+        if closed:
+            continue
+
         sentinel_status = get_sentinel_status(pr_checks)
         if sentinel_status == "SUCCESS":
             print("SUCCESS", url)
             sp.check_call(["gh", "pr", "close", url])
         else:
             print(sentinel_status, url)
 
+    for missing_repo in {repo for repo in provider_map if not provider_map[repo]}:
+        print("MISSING", repo_actions_url(missing_repo))
+
 
 if __name__ == "__main__":
     main()