release-v0.5.5

[aneeshk-citrix]

New Features:

• Support adding users in UPN format along with SAM name in restricted_access_users in Delivery Group. #47
• Support license type, disk encryption set and shared image gallery for Azure MCS catalog. #47
• Support Intune for Azure AD MCS catalog. #47
• Support images in a shared subscription for Azure MCS catalog. #58
• Support security groups and tenancy type for AWS EC2 MCS Machine Catalog. Also fixes bug #60
• Support Custom Properties for MCS Machine Catalog.
• Support Workgroup (Non-Domain Joined) MCS Machine Catalog.
• Support enabled field for policy sets.

Breaking change:

• Master image related properties for Azure MCS Machine Catalog now have a nested schema citrix_machine_catalog.azure_machine_config.azure_master_iamge.
• citrix_policy_set.policy_filters.data now has a nested schema (previously string).

Other changes:

• Add document for detailed explanations on policy settings and filters.