Added delete_route mock.
Updated associate_route_table mock to return the correct association id and with additional fields that were previously missing.
Added mock for disassociate_route_table.
Updated disassociate_route_table to use basic parser, as it was returning a boolean as a string.
Updated disassociate_route_table to follow a more standard variable format.
Adde delete_route_table mock.
Fixed indenting in delete_route
Fixed error happening when the route_table was nil.
Updated create route to make additional checks so it passed our tests.