systemvmtemplate: set next CLOUDSTACK_VERSION to 4.5.0

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
schema: add Upgrade431to440 that extends 430to440

This adds an upgrade path from 4.3.1 to 4.4.0, the implementation of which
simply extends the Upgrade430to440 as there was no schema change between 4.3.0
and 4.3.1

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
(cherry picked from commit 208399354fa82513e2fb70738cb6eee8454ea3a5)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
DatabaseUpgradeChecker: add DB upgrade path from 4.3.1 to 4.5.0

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>