Selected instances are not deleted with pagination

Added get_full_url() method to get the absolute url
with the marker object required for pagination and
used it in form action with POST call on terminate
instance.
Overridden the get_full_url() method to encode the url
for ContainersTable and ObjectsTable classes which
inherits the DataTable class.

Change-Id: Idcf09e2e42bdfcbe8eb6d9f554d653fd7143bf8c
Closes-Bug: #1287093
Merge "Selected instances are not deleted with pagination"