Adding Git multi branch configuration and Tfvc Destroy related scripts#76

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raggupta-ms wants to merge 2 commits intomasterfrom

users/raggupta/updateGitHubScriptsForGitMultiBranchAndTfvcDestroy

Commits on Jun 3, 2019

Adding git multibranch and Tfvc Destroy related scripts
raggupta-ms
committed
removing tfvc destory script for 2018 rtw and u1 releases where usage of ES delete by query is incorrect. Will take that via separate PR
raggupta-ms
committed