IMPALA-10879: Add parquet stats to iceberg manifest

This patch adds parquet stats to iceberg manifest as per-datafile
metrics.

The following metrics are supported:
- column_sizes :
  Map from column id to the total size on disk of all regions that
  store the column. Does not include bytes necessary to read other
  columns, like footers.

- null_value_counts :
  Map from column id to number of null values in the column.

- lower_bounds :
  Map from column id to lower bound in the column serialized as
  binary. Each value must be less than or equal to all non-null,
  non-NaN values in the column for the file.

- upper_bounds :
  Map from column id to upper bound in the column serialized as
  binary. Each value must be greater than or equal to all non-null,
  non-Nan values in the column for the file.

The corresponding parquet stats are collected by 'ColumnStats'
(in 'min_value_', 'max_value_', 'null_count_' members) and
'HdfsParquetTableWriter::BaseColumnWriter' (in
'total_compressed_byte_size_' member).

Testing:
- New e2e test was added to verify that the metrics are written to the
  Iceberg manifest upon inserting data.
- New e2e test was added to verify that lower_bounds/upper_bounds
  metrics are used to prune data files on querying iceberg tables.
- Existing e2e tests were updated to work with the new behavior.
- BE test for single-value serialization.

Relevant Iceberg documentation:
- Manifest:
  https://iceberg.apache.org/spec/#manifests
- Values in lower_bounds and upper_bounds maps should be Single-value
  serialized to binary:
  https://iceberg.apache.org/spec/#appendix-d-single-value-serialization

Change-Id: Ic31f2260bc6f6a7f307ac955ff05eb154917675b
Reviewed-on: http://gerrit.cloudera.org:8080/17806
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Reviewed-by: Attila Jeges <attilaj@cloudera.com>

infra/python/deps/requirements.txt

@@ -66,6 +66,7 @@ six == 1.14.0
 sqlparse == 0.3.1
 texttable == 0.8.3
 virtualenv == 16.7.10
+avro==1.10.2
 
 # Required for Kudu:
   Cython == 0.29.14