Fix DiskLabel issue
remove app.config
reset test settings
Update mapping for Linux VM
Fix Deployment Info Context
Merge pull request #90 from huangpf/publisher

PR Sprint 31
Fix Update-AzureVM for Reference Name issue
Fix bug
fix code blank lines
Merge branch 'publisher' of https://github.com/Huangpf/azure-sdk-tools into dev
Fix VM Access Extension tests
Merge pull request #91 from huangpf/publisher

VM Extension Fix PR
Fix VM Access Extension test
Merge branch 'dev' of https://github.com/AzureRT/azure-sdk-tools into dev
Merge branch 'dev' of https://github.com/AzureRT/azure-sdk-tools into dev
Fix failed tests because of default reference name for BGInfo extension