This PR updates Pinecone index creation in the ingest test due to a
recent update in Pinecone API.
Due to a change in Pinecone API, it is not allowed anymore to specify
both number of replicas and number of pods:
`Cannot specify both replicas and pods`
We solve it by removing the replica specification while sending the
index creation request.
```
Creating index ingest-test-28418
Index creation success: 201
```
### Description
Given all the shell files that now exist in the repo, would be nice to
have linting/formatting around them (in addition to the existing
shellcheck which doesn't do anything to format the shell code). This PR
introduces `shfmt` to both check for changes and apply formatting when
the associated make targets are called.
