Comment out tests that depend on having a certain number of caches

The namespaces JSON does not list Pelican caches (on purpose); as we
convert more I2 caches, we drop below the number of caches the tests are
expecting.  Until we come up with some better tests, comment out these
ones to avoid unnecessary failures.

src/tests/test_stashcache.py

@@ -326,11 +326,11 @@ def validate_namespace_schema(ns):
             if credgen["base_path"]:
                 assert isinstance(credgen["base_path"], str)
 
-    def test_caches(self, caches):
-        # Have a reasonable number of caches
-        assert len(caches) > 20
-        for cache in caches:
-            self.validate_cache_schema(cache)
+    # def test_caches(self, caches):
+    #     # Have a reasonable number of caches
+    #     assert len(caches) > 20
+    #     for cache in caches:
+    #         self.validate_cache_schema(cache)
 
     def test_namespaces(self, namespaces):
         # Have a reasonable number of namespaces
@@ -375,7 +375,7 @@ def test_testvo_public_namespace(self, namespaces):
         assert ns["readhttps"] is False
         assert ns["usetokenonread"] is False
         assert TEST_SC_ORIGIN in ns["writebackhost"]
-        assert len(ns["caches"]) > 10
+        # assert len(ns["caches"]) > 10
         assert len(ns["origins"]) == 2
         assert ns["credential_generation"] is None
         assert len(ns["scitokens"]) == 1
@@ -394,7 +394,7 @@ def test_testvo_namespace(self, namespaces):
         assert ns["usetokenonread"] is True
         assert TEST_ORIGIN_AUTH2000 in ns["writebackhost"]
         assert TEST_ORIGIN_AUTH2000 in ns["dirlisthost"]
-        assert len(ns["caches"]) > 10
+        # assert len(ns["caches"]) > 10
         assert len(ns["origins"]) == 1
         credgen = ns["credential_generation"]
         assert credgen["base_path"] == TEST_BASEPATH