fix node id's assigned to vector store + pinecone ref doc id (#1037)

gpt_index/data_structs/node_v2.py

gpt_index/indices/vector_store/base.py

gpt_index/vector_stores/chatgpt_plugin.py

gpt_index/vector_stores/pinecone.py

gpt_index/vector_stores/qdrant.py

gpt_index/vector_stores/types.py

tests/indices/vector_store/test_base.py