Added a parser for archive names to cover the situation when an archive
name could be represented in two different formats
1) <database name>.<namespace>.<table name | all>.<date-time>.tar.gz
2) <database name>.<namespace>.<table name | all>.<backup mode>.<date-time>.tar.gz
The first format is what is using at the moment,
the second format is recommended for future use.
Change-Id: I6b631b3b938c0a0242c5a8870284995b2cd8f27b