[resource-scraper] introduce utility integration

[maorfr]

this is a utility integration that collects resources from specific namespaces of clusters and stores them in vault.

this utility can be used for different purposes, such as disaster recovery.
the current use case is https://issues.redhat.com/browse/OSD-10326

[maorfr]

error:

reconcile/resource_scraper.py:57: error: "VaultClient" has no attribute "write"  [attr-defined]

VaultClient indeed doesn't have a write method, _VaultClient has it. what would be the best way to overcome this?
perhaps this?

$ git diff
diff --git a/reconcile/utils/vault.py b/reconcile/utils/vault.py
index 4106c2f..2e4b989 100644
--- a/reconcile/utils/vault.py
+++ b/reconcile/utils/vault.py
@@ -301,3 +301,6 @@ class VaultClient:
             return cls._instance
 
         return cls._instance
+
+    def write(cls, *args, **kwargs):
+        return cls._instance.write(*args, **kwargs)

[maorfr]

mypy cast commit details: python/mypy#1020, https://mypy.readthedocs.io/en/stable/common_issues.html#complex-type-tests

[dustman9000]

Thanks for adding this Maor! Can you also add support for filtering on labels? The way we were scraping the secrets was to filter on the label:

oc get secret ... -l app=openshift-sre-token-scraper

[maorfr]

contributions are welcome? :)

[TGPSKI]

After discussing with Dustin we are going to merge as-is, and Dustin will contribute a patch to add filtering on a later MR.