Rename models.LRPStartAuction to LRPStart

[#83638694]

Signed-off-by: Atul Kshirsagar <atul.kshirsagar@gmail.com>
Added validation of request in auction handlers

[#83638694]

Signed-off-by: Atul Kshirsagar <atul.kshirsagar@gmail.com>
Provide request session to auction handlers

[#83638694]

Signed-off-by: Atul Kshirsagar <atul.kshirsagar@gmail.com>