Migrating data to newUserFunctionId tables as part of Consumption plan support

[MaddyDev]

New UserFunctionId: We have used the WEBSITE_SITE_NAME instead of the host id for creating the new userFunctionId

Migration steps followed:

1. While creating the lease table entry in the global state table, check if there a value with the oldUserFunctionId and use that value while inserting a new entry with the new userFunctionId to the global state table. And delete the oldUserFunctionId entry.
2. Create new leases table with new hash and if old leases table exists, copy over all the data from it and delete the table.

Test: To Be Done