Corner cases for long-term reservation mechanism

This task marks as bug fixed after 3.0 feature freeze

Corner cases for long-term reservation:

• if user already have long-term reservation, when user is removed from the long-term usage list, the reservation should be released or become short-term reservation
• how to determine if the reservation should be revoked if the user is no longer in the list( release license when the config file is update or it should be done manually by the admin)
• should we allow LT-reservation for floating licenses tpyssysa?