Fixing arm:regen in rakefile (#491)
Fixing arm:regen in rakefile (#491)

arm:regen was failing due to dir having "management/" in the string, as it was not finding this in REGEN_METADATA .
devigned/azure-sdk-for-ruby,Azure/azure-sdk-for-ruby,Azure/azure-sdk-for-ruby,devigned/azure-sdk-for-ruby