Roll gsutil version to 4.15.

tools/telemetry/third_party/gsutilz/gslib/tests/testcase/integration_testcase.py

Index: tools/telemetry/third_party/gsutilz/gslib/tests/testcase/integration_testcase.py
diff --git a/tools/telemetry/third_party/gsutilz/gslib/tests/testcase/integration_testcase.py b/tools/telemetry/third_party/gsutilz/gslib/tests/testcase/integration_testcase.py
index 0979c453a4e17565b1b4f6e36cefe6f29ed9e95b..e7f01a307594b6feca233d15aeaff00025251a47 100644
--- a/tools/telemetry/third_party/gsutilz/gslib/tests/testcase/integration_testcase.py
+++ b/tools/telemetry/third_party/gsutilz/gslib/tests/testcase/integration_testcase.py
@@ -86,9 +86,9 @@ class GsUtilIntegrationTestCase(base.GsUtilTestCase):
   GROUP_TEST_ADDRESS = 'gs-discussion@googlegroups.com'
   GROUP_TEST_ID = (
       '00b4903a97d097895ab58ef505d535916a712215b79c3e54932c2eb502ad97f5')
-  USER_TEST_ADDRESS = 'gs-team@google.com'
+  USER_TEST_ADDRESS = 'gsutiltestuser@gmail.com'
   USER_TEST_ID = (
-      '00b4903a9703325c6bfc98992d72e75600387a64b3b6bee9ef74613ef8842080')
+      '00b4903a97b201e40d2a5a3ddfe044bb1ab79c75b2e817cbe350297eccc81c84')
   DOMAIN_TEST = 'google.com'
   # No one can create this bucket without owning the gmail.com domain, and we
   # won't create this bucket, so it shouldn't exist.
@@ -391,8 +391,8 @@ class GsUtilIntegrationTestCase(base.GsUtilTestCase):
       arguments.
     """
     cmd = ([gslib.GSUTIL_PATH] + ['--testexceptiontraces'] +
-          ['-o', 'GSUtil:default_project_id=' + PopulateProjectId()] +
-          cmd)
+           ['-o', 'GSUtil:default_project_id=' + PopulateProjectId()] +
+           cmd)
     if IS_WINDOWS:
       cmd = [sys.executable] + cmd
     p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,