chore: Enabling Integration tests for Weaviate (#2882)

# What does this PR do?

This PR (1) enables the files API for Weaviate and (2) enables
integration tests for Weaviate, which adds a docker container to the
github action.

This PR also handles a couple of edge cases for in creating the
collection and ensuring the tests all pass.

## Test Plan
CI enabled

---------

Signed-off-by: Francisco Javier Arceo <farceo@redhat.com>

tests/integration/vector_io/test_openai_vector_stores.py

@@ -29,6 +29,7 @@ def skip_if_provider_doesnt_support_openai_vector_stores(client_with_models):
             "inline::chromadb",
             "remote::pgvector",
             "remote::chromadb",
+            "remote::weaviate",
         ]:
             return
 
@@ -109,11 +110,11 @@ def test_openai_create_vector_store(compat_client_with_empty_stores, client_with
 
     # Create a vector store
     vector_store = client.vector_stores.create(
-        name="test_vector_store", metadata={"purpose": "testing", "environment": "integration"}
+        name="Vs_test_vector_store", metadata={"purpose": "testing", "environment": "integration"}
     )
 
     assert vector_store is not None
-    assert vector_store.name == "test_vector_store"
+    assert vector_store.name == "Vs_test_vector_store"
     assert vector_store.object == "vector_store"
     assert vector_store.status in ["completed", "in_progress"]
     assert vector_store.metadata["purpose"] == "testing"

tests/unit/providers/vector_io/test_vector_utils.py

@@ -5,7 +5,7 @@
 # the root directory of this source tree.
 
 from llama_stack.apis.vector_io import Chunk, ChunkMetadata
-from llama_stack.providers.utils.vector_io.chunk_utils import generate_chunk_id
+from llama_stack.providers.utils.vector_io.vector_utils import generate_chunk_id
 
 # This test is a unit test for the chunk_utils.py helpers. This should only contain
 # tests which are specific to this file. More general (API-level) tests should be placed in