When 'pedantic' mode is on custom options can still be passed

[yruslan]

Background

The pedantic mode allows making sure typos made when passing options to Cobrix causes the Spark job to fail. But Cobrix can't check custom options that are only used with custom record extractors defined by users. They should be excluded from the pedantic options check.

Proposed option keys to ignore:

• custom*
• _*

Feature

When 'pedantic' mode is on custom options can still be passed.

Example [Optional]

The following code should not fail:

spark.read
  .format("cobol")
  .option("pedantic", "true")
  .option("custom_key1", "value1")

Proposed Solution [Optional]

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