[SPARK-37170][PYTHON][DOCS] Pin PySpark version installed in the Bind…

…er environment for tagged commit

### What changes were proposed in this pull request?
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This PR proposes to pin the version of PySpark to be installed in the live notebook environment for tagged commits.

### Why are the changes needed?
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I noticed that the PySpark `3.1.2` is installed in the live notebook environment even though the notebook is for PySpark `3.2.0`.
http://spark.apache.org/docs/3.2.0/api/python/getting_started/index.html

I guess someone accessed to Binder and built the container image with `v3.2.0` before we published the `pyspark` package to PyPi.
https://mybinder.org/

I think it's difficult to rebuild the image manually.
To avoid such accident, I'll propose this change.

### Does this PR introduce _any_ user-facing change?
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No.

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Confirmed that if a commit is tagged, we can avoid building the container image with unexpected version of `pyspark` in Binder.
```
...
  Downloading plotly-5.3.1-py2.py3-none-any.whl (23.9 MB)
�[91mERROR: Could not find a version that satisfies the requirement pyspark[ml,mllib,pandas_on_spark,sql]==3.3.0.dev0 (from versions: 2.1.2, 2.1.3, 2.2.0.post0, 2.2.1, 2.2.2, 2.2.3, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.1.1, 3.1.2, 3.2.0)
ERROR: No matching distribution found for pyspark[ml,mllib,pandas_on_spark,sql]==3.3.0.dev0
�[0mRemoving intermediate container de55eed5966e
The command '/bin/sh -c ./binder/postBuild' returned a non-zero code: 1Built image, launching...
Failed to connect to event stream
```

If a commit is not tagged, an old version of `pyspark` can be installed if the exactly specified version is not published to PyPi.
https://hub.gke2.mybinder.org/user/sarutak-spark-ky222nbf/notebooks/python/docs/source/getting_started/quickstart_df.ipynb

Closes apache#34449 from sarutak/pin-pyspark-version-binder.

Authored-by: Kousuke Saruta <[email protected]>
Signed-off-by: Hyukjin Kwon <[email protected]>

binder/apt.txt

@@ -1 +1,2 @@
 openjdk-8-jre
+git

binder/postBuild

@@ -21,4 +21,15 @@
 # Jupyter notebook.
 
 VERSION=$(python -c "exec(open('python/pyspark/version.py').read()); print(__version__)")
-pip install plotly "pyspark[sql,ml,mllib,pandas_on_spark]<=$VERSION"
+TAG=$(git describe --tags --exact-match 2>/dev/null)
+
+# If a commit is tagged, exactly specified version of pyspark should be installed to avoid
+# a kind of accident that an old version of pyspark is installed in the live notebook environment.
+# See SPARK-37170
+if [ -n "$TAG" ]; then
+  SPECIFIER="=="
+else
+  SPECIFIER="<="
+fi
+
+pip install plotly "pyspark[sql,ml,mllib,pandas_on_spark]$SPECIFIER$VERSION"