DRIVERS-3390 Add appName to OIDC test failpoints

[kevinAlbs]

Summary

Add appName to isolate failpoints in OIDC tests.

Background & Motivation

This is intended to address test failures observed in C (example) and Rust (example), and maybe others drivers. Sometimes the GCP OIDC tests fail to trigger an expected failpoint.

Running repeatedly in the C driver reproduced the failure on a test configuring a failpoint. This patch build logs:

... "Command started" ... "configureFailPoint" ... \"failCommands\" : [ \"find\" ]
... "Command succeeded" ... "configureFailPoint" ...
... "Command started" ...  "find" ...
... "Command succeeded" ...  "find" ...

The "find" did not expectedly fail.

Diagnosing

Using mongosh to connect to an Atlas cluster created by the OIDC GCP scripts enabled testing a failpoint in the same environment:

db.adminCommand({"configureFailPoint": "failCommand", "mode": { "times": 2 }, "data": {"failCommands": [ "find" ], "errorCode": 391 }});
db.runCommand({find: "coll", filter: {}})

This usually throws the expected exception. However, if paused between configuring the failpoint and running the find command, the find sometimes surprisingly succeeds.

Printing server logs indicate the automation agent is connecting:

db.adminCommand({ getLog: "global" }).log.slice(-10).forEach((msg) => print(msg));
// Sometimes shows connection from "MongoDB Automation Agent".

So I expect another process may be triggering the failpoint.

Testing

With the appName added, a test of the C driver running on repeat 20 times passes:
Evergreen patch: https://spruce.mongodb.com/version/6983ff9b967f4f00073726da

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Please complete the following before merging:

• Is the relevant DRIVERS ticket in the PR title?
• [ ] Update changelog. N/A. Test changes only.
• Test changes in at least one language driver. Tested in C with 20x repeat in this patch
• [ ] Test these changes against all server versions and topologies (including standalone, replica set, and sharded
  clusters). N/A. Tested OIDC tasks.

[blink1073]

Testing with pymongo in this patch, and PR.

[blink1073]

LGTM!