Log Message:
py-softlayer: added version 5.5.3

5.5.3:
Added slcli user delete
Added slcli order quote to let users create a quote from the slcli.
Fixed vs upgrades when using flavors.
Added pagination to ticket list commands
Fixed DNS manager to be more flexible and support more zone types.
Pinned Click library version at >=5 < 7

5.5.2:
Fixed hardware credentials.
support for ticket priorities
create dedicated host with gpu fixed.

5.5.1:
added paginations to several slcli methods, making them work better with large \ 
result sets.
Fixed an issue displaying VLANs.
Fixed an issue displaying some NAS passwords
Ability to delete users

5.5.0:
Added a warning when ordering legacy storage volumes
Added documentation link to volume-order
Increased slcli output width limit to 999 characters
More unit tests
Fixed an issue canceling some block storage volumes
Fixed slcli order to work with network gateways
Fixed an issue showing hardware credentials when they do not exist
Fixed an issue showing addressSpace when listing virtual servers
Updated ordering class to support baremetal servers with multiple GPU
Updated prompt-toolkit as a fix for slcli shell
Fixed slcli vlan detail to not fail when objects don't have a hostname
Added user management