[SPARK-34983][PYTHON] Renaming the package alias from pp to ps

[LSturtew]

What changes were proposed in this pull request?

This PR proposes to fix:

import pyspark.pandas as pp

to

import pyspark.pandas as ps

Why are the changes needed?

pp might sound offensive in some contexts.

Does this PR introduce any user-facing change?

The change is in master only. We'll use ps as the short name instead of pp.

How was this patch tested?

The CI in this PR will test it out.

[LSturtew]

Can one of the admins verify this patch?

[HyukjinKwon]

ok to test

[HyukjinKwon]

I am fine with dropping mine considering that it's first contribution from @LSturtew. Thanks for your contribution.

[HyukjinKwon]

Looks good. @itholic and @xinrong-databricks would you mind double checking?

[SparkQA]

Test build #137163 has finished for PR 32108 at commit e1719a5.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/41742/

[SparkQA]

Kubernetes integration test status failure
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/41742/

[SparkQA]

Test build #137166 has finished for PR 32108 at commit 5fbd795.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #137167 has finished for PR 32108 at commit 4a179b6.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/41745/

[SparkQA]

Kubernetes integration test status failure
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/41745/

[itholic]

LGTM. Thanks, @LSturtew !

[HyukjinKwon]

Merged to master.