[SPARK-33802][INFRA][FOLLOW-UP] Separate arguments properly for -c option in git command for PySpark coverage

[HyukjinKwon]

What changes were proposed in this pull request?

This PR proposes to separate arguments properly for -c options. Otherwise, the space is considered as its part of argument:

Cloning into 'pyspark-coverage-site'...
unknown option: -c user.name='Apache Spark Test Account'
usage: git [--version] [--help] [-C <path>] [-c <name>=<value>]
           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
           [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--bare]
           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
           <command> [<args>]
[error] running git -c user.name='Apache Spark Test Account' -c user.email='[email protected]' commit -am Coverage report at latest commit in Apache Spark ; received return code 129

Why are the changes needed?

To make the build pass (https://amplab.cs.berkeley.edu/jenkins/job/spark-master-test-sbt-hadoop-3.2/1728/console).

Does this PR introduce any user-facing change?

No, dev-only.

How was this patch tested?

>>> from sparktestsupport.shellutils import run_cmd
>>> run_cmd([
...             "git",
...             "-c",
...             "user.name='Apache Spark Test Account'",
...             "-c",
...             "user.email='[email protected]'",
...             "commit",
...             "-am",
...             "Coverage report at latest commit in Apache Spark"])
[SPARK-33802-followup 80d2565a511] Coverage report at latest commit in Apache Spark
 1 file changed, 1 insertion(+), 1 deletion(-)
CompletedProcess(args=['git', '-c', "user.name='Apache Spark Test Account'", '-c', "user.email='[email protected]'", 'commit', '-am', 'Coverage report at latest commit in Apache Spark'], returncode=0)

I cannot run e2e test because it requires the env to have Jenkins secret.

[HyukjinKwon]

@dongjoon-hyun, there was a mistake in the previous PR. Please let me merge this in first and see if it fixes https://amplab.cs.berkeley.edu/jenkins/job/spark-master-test-sbt-hadoop-3.2/1728/console. It won't affect any PR builder or dev process.

Let me know if there's any concern.

[HyukjinKwon]

Merged to master.

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/37494/

[SparkQA]

Kubernetes integration test status success
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/37494/

[SparkQA]

Test build #132892 has finished for PR 30804 at commit c8442d3.

• This patch fails PySpark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.