CDRIVER-5901 support auto encryption in unified tests

[mdb-ad]

Evergreen: https://spruce.mongodb.com/version/6827b7ca805919000708843e

[eramongodb]

Aside from addressing ClangFormat issues, LGTM.

I suspect EVG tasks are currently failing due to DRIVERS-3188, not due to changes in this PR.

[kevinAlbs]

On second look, I think some test task failures may be introduced in this PR. For example asan-sasl-cyrus-openssl-ubuntu2004-clang-test-latest-sharded-auth is failing with:

error: missing required environment variable 'MONGOC_TEST_AWS_ACCESS_KEY_ID'

I expect that task is not intended to run client side encryption tests (e.g. tasks named *-cse-* run client side encryption tests). The unified tests may need to be conditioned on test_framework_skip_if_no_client_side_encryption:

diff --git a/src/libmongoc/tests/unified/runner.c b/src/libmongoc/tests/unified/runner.c
index b049d464ef..81b052e544 100644
--- a/src/libmongoc/tests/unified/runner.c
+++ b/src/libmongoc/tests/unified/runner.c
@@ -794,6 +794,11 @@ check_run_on_requirement (test_runner_t *test_runner,
             return false;
          }
 
+         if (0 == test_framework_skip_if_no_client_side_encryption ()) {
+            *fail_reason = bson_strdup_printf ("CSFLE is required but not all environment variables are set");
+            return false;
+         }
+
          if (csfle_required) {
             continue;
          }

[kevinAlbs]

LGTM (assuming expected tests pass).