[BEAM-10871] Fix FhirLROIT tests

[trucleduc]

Please add a meaningful description for your change here

In #12721 , we delete all FHIR stores in the clean up which may interfere with other integration tests. This PR fixes this by only deleting FHIR stores generated by the test.

R: @pabloem
R: @TheNeuralBit

---

Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:

• Choose reviewer(s) and mention them in a comment (R: @username).
• Format the pull request title like [BEAM-XXX] Fixes bug in ApproximateQuantiles, where you replace BEAM-XXX with the appropriate JIRA issue, if applicable. This will automatically link the pull request to the issue.
• Update CHANGES.md with noteworthy changes.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

See the Contributor Guide for more tips on how to make review process smoother.

Post-Commit Tests Status (on master branch)

Lang	SDK	Dataflow	Flink	Samza	Spark	Twister2
Go		---		---		---
Java
Python	](https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/)			---		---
XLang		---		---		---

Pre-Commit Tests Status (on master branch)

---	Java	Python	Go	Website	Whitespace	Typescript
Non-portable
Portable	---		---	---	---	---

See .test-infra/jenkins/README for trigger phrase, status and link of all Jenkins jobs.

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI.

[TheNeuralBit]

Run Java PostCommit

[TheNeuralBit]

LGTM, thank you! I'll merge when Java PostCommit passes

[trucleduc]

@TheNeuralBit Would you please hold on merging, I realized that there could be flakiness issue for the existing tests. I'll investigate.

[TheNeuralBit]

ok I'll hold off, thanks

[trucleduc]

@TheNeuralBit ok fixed. I tried to run the test 10 times and they all passed.

[TheNeuralBit]

Run Java PostCommit

[TheNeuralBit]

@trucleduc there was a failure:

com.google.api.client.googleapis.json.GoogleJsonResponseException: 409 Conflict
{
  "code" : 409,
  "errors" : [ {
    "domain" : "global",
    "message" : "already exists",
    "reason" : "alreadyExists"
  } ],
  "message" : "already exists",
  "status" : "ALREADY_EXISTS"
}
	at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:149)
	at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:112)
	at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:39)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:443)
	at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1108)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:541)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:474)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:591)
	at org.apache.beam.sdk.io.gcp.healthcare.HttpHealthcareApiClient.createFhirStore(HttpHealthcareApiClient.java:161)
	at org.apache.beam.sdk.io.gcp.healthcare.FhirIOLROIT.test_FhirIO_deidentify(FhirIOLROIT.java:102)

[TheNeuralBit]

Run Java PostCommit

[TheNeuralBit]

Run Java PostCommit

[TheNeuralBit]

Java PostComit passed
PreCommit failed but it looks like unrelated flake BEAM-7827