Added better exception handling for missing jceks parameters and files

[alexjbush]

Description

Better handling of exceptions in the case of missing jceks files and missing parameters in the files.

Type of change

Please delete options that are not relevant.

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Unit tested

[coveralls]

Pull Request Test Coverage Report for Build 177

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• 5 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.5%) to 75.142%

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Files with Coverage Reduction	New Missed Lines	%
waimak-impala/src/main/scala/com/coxautodata/waimak/metastore/ImpalaDBConnector.scala	1	69.57%
waimak-storage/src/main/scala/com/coxautodata/waimak/storage/FileStorageOps.scala	1	93.1%
waimak-storage/src/main/scala/com/coxautodata/waimak/storage/StorageActions.scala	1	88.89%
waimak-core/src/main/scala/com/coxautodata/waimak/dataflow/spark/SparkActions.scala	2	68.09%
<!--	Total:	5		-->

Totals
Change from base Build 172:	0.5%
Covered Lines:	795
Relevant Lines:	1058

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💛 - Coveralls