[Test] Reactive 3rd party tests on CI (#31919)

3rd party tests are failing because the repository-s3 is expecting some 
enviromnent variables in order to test session tokens but the CI job is 
not ready yet to provide those. This pull request relaxes the constraints 
on the presence of env vars so that the 3rd party tests can still be 
executed on CI.

closes #31813

plugins/repository-s3/build.gradle

@@ -92,23 +92,26 @@ String s3TemporaryBasePath = System.getenv("amazon_s3_base_path_temporary")
 // If all these variables are missing then we are testing against the internal fixture instead, which has the following
 // credentials hard-coded in.
 
-if (!s3PermanentAccessKey && !s3PermanentSecretKey && !s3PermanentBucket && !s3PermanentBasePath
-        && !s3TemporaryAccessKey && !s3TemporarySecretKey && !s3TemporaryBucket && !s3TemporaryBasePath && !s3TemporarySessionToken) {
-
+if (!s3PermanentAccessKey && !s3PermanentSecretKey && !s3PermanentBucket && !s3PermanentBasePath) {
   s3PermanentAccessKey = 's3_integration_test_permanent_access_key'
   s3PermanentSecretKey = 's3_integration_test_permanent_secret_key'
   s3PermanentBucket = 'permanent-bucket-test'
   s3PermanentBasePath = 'integration_test'
 
+  useFixture = true
+
+} else if (!s3PermanentAccessKey || !s3PermanentSecretKey || !s3PermanentBucket || !s3PermanentBasePath) {
+  throw new IllegalArgumentException("not all options specified to run against external S3 service")
+}
+
+if (!s3TemporaryAccessKey && !s3TemporarySecretKey && !s3TemporaryBucket && !s3TemporaryBasePath && !s3TemporarySessionToken) {
   s3TemporaryAccessKey = 's3_integration_test_temporary_access_key'
   s3TemporarySecretKey = 's3_integration_test_temporary_secret_key'
   s3TemporaryBucket = 'temporary-bucket-test'
   s3TemporaryBasePath = 'integration_test'
   s3TemporarySessionToken = 's3_integration_test_temporary_session_token'
 
-  useFixture = true
-} else if (!s3PermanentAccessKey || !s3PermanentSecretKey || !s3PermanentBucket || !s3PermanentBasePath
-        || !s3TemporaryAccessKey || !s3TemporarySecretKey || !s3TemporaryBucket || !s3TemporaryBasePath || !s3TemporarySessionToken) {
+} else if (!s3TemporaryAccessKey || !s3TemporarySecretKey || !s3TemporaryBucket || !s3TemporaryBasePath || !s3TemporarySessionToken) {
   throw new IllegalArgumentException("not all options specified to run against external S3 service")
 }
 
@@ -296,6 +299,13 @@ processTestResources {
   MavenFilteringHack.filter(it, expansions)
 }
 
+project.afterEvaluate {
+  if (useFixture == false) {
+    // 30_repository_temporary_credentials is not ready for CI yet
+    integTestRunner.systemProperty 'tests.rest.blacklist', 'repository_s3/30_repository_temporary_credentials/*'
+  }
+}
+
 integTestCluster {
   keystoreSetting 's3.client.integration_test_permanent.access_key', s3PermanentAccessKey
   keystoreSetting 's3.client.integration_test_permanent.secret_key', s3PermanentSecretKey