Add xargs to coordinator (#1505)

## Description of changes

*Summarize the changes made by this PR.*
 - Improvements & Bug fixes
- Add `findutils` to Coordinator docker image. This gives us useful
utilities to use to administer the coordinator and debug the production
deployment.

## Test plan
*How are these changes tested?*

- [x] Built the image locally

## Documentation Changes
*Are all docstrings for user-facing APIs updated if required? Do we need
to make documentation changes in the [docs
repository](https://github.com/chroma-core/docs)?*

go/coordinator/Dockerfile

@@ -10,7 +10,7 @@ RUN cd /src/chroma-coordinator \
 
 FROM alpine:3.17.3
 
-RUN apk add --no-cache bash bash-completion jq
+RUN apk add --no-cache bash bash-completion jq findutils
 
 # As of 6 Dec 2023, the atlas package isn't in Alpine's main package manager, only
 # testing. So we have to add the testing repository to get it.