update rag examples to use fresh faiss index every time

docs/getting_started.ipynb

@@ -1656,6 +1656,7 @@
         }
       ],
       "source": [
+        "import uuid\n",
         "from llama_stack_client.lib.agents.agent import Agent\n",
         "from llama_stack_client.lib.agents.event_logger import EventLogger\n",
         "from llama_stack_client.types.agent_create_params import AgentConfig\n",
@@ -1673,7 +1674,7 @@
         "    for i, url in enumerate(urls)\n",
         "]\n",
         "\n",
-        "vector_db_id = \"test-vector-db\"\n",
+        "vector_db_id = f\"test-vector-db-{uuid.uuid4().hex}\"\n",
         "client.vector_dbs.register(\n",
         "    vector_db_id=vector_db_id,\n",
         "    embedding_model=\"all-MiniLM-L6-v2\",\n",

docs/source/getting_started/index.md

@@ -173,6 +173,7 @@ Here is an example of a simple RAG (Retrieval Augmented Generation) chatbot agen
 
 ```python
 import os
+import uuid
 from termcolor import cprint
 
 from llama_stack_client.lib.agents.agent import Agent
@@ -214,7 +215,7 @@ documents = [
 ]
 
 # Register a vector database
-vector_db_id = "test-vector-db"
+vector_db_id = f"test-vector-db-{uuid.uuid4().hex}"
 client.vector_dbs.register(
     vector_db_id=vector_db_id,
     embedding_model="all-MiniLM-L6-v2",

tests/client-sdk/agents/test_agents.py

@@ -414,7 +414,7 @@ def test_rag_and_code_agent(llama_stack_client, agent_config):
         )
         for i, url in enumerate(urls)
     ]
-    vector_db_id = "test-vector-db"
+    vector_db_id = f"test-vector-db-{uuid4()}"
     llama_stack_client.vector_dbs.register(
         vector_db_id=vector_db_id,
         embedding_model="all-MiniLM-L6-v2",