Fix handling of scalar argument in slice operator (NVIDIA#3596)

- when a scalar argument is provided to slice it tries to obtain
  its shape which is empty what leads to a crash. Fixes this problem
  by providing a proper guard

Signed-off-by: Janusz Lisiecki <[email protected]>

Update VERSION to 1.10.0dev

Signed-off-by: Rafal <[email protected]>

Move to Ubuntu 20.04 for cuda 10.2 toolkit image (NVIDIA#3477)

Signed-off-by: Janusz Lisiecki <[email protected]>

Update version to 1.9.0dev

Signed-off-by: Rafal <[email protected]>

Update version to 1.8.0dev

Signed-off-by: Rafal <[email protected]>

Update version to 1.7.0

Signed-off-by: Rafal <[email protected]>

Work around PyTorch internal fragmentation in L3 SSD test. (NVIDIA#3343)

Signed-off-by: Michal Zientkiewicz <[email protected]>

Update version to 1.7.0dev

Signed-off-by: Rafal <[email protected]>

Update version to 1.6.0dev

Signed-off-by: Rafal <[email protected]>

Update version to 1.5.0

Signed-off-by: Rafal <[email protected]>