azure-mgmt-core 1.1.0 release date (#11206)
azure-mgmt-core 1.1.0 release date (#11206)

* azure-mgmt-core 1.1.0 release date

* Update CHANGELOG.md
Azure/azure-sdk-for-python,Azure/azure-sdk-for-python,Azure/azure-sdk-for-python,Azure/azure-sdk-for-python