Add support for defining environment varibles to dump the Language scripts
into .ds file.This is one time activity based on which Lanugage tests
needs to be imported to CBN.
Add a flag to Dump Lanugage scripts into .ds files
Files generaetd will be used by CBNLanguageComparison testframework
to run tests in lanugage and then dump them to CBN for comparison
Change type of value dumpDS from string to bool
to match the flag type
Improve code quality for boolean check
Merge pull request #2201 from monikaprabhu/tBranch

Flag for dumpDS required to dump Language Scripts into .ds file
Merge branch 'master' of https://github.com/DynamoDS/Dynamo into Concurrent