* adapt the C-level reproducer code for some
recent SkylakeX AVX512 kernel issues, provided
by Isuru Fernando and modified by Martin Kroeker,
for usage in the utest suite
* add an Intel SDE SkylakeX emulation utest run to
the Azure CI matrix; a custom Docker build was required
because Ubuntu image provided by Azure does not support
AVX512VL instructions
* remove some of the steps & comments
from the original Azure yml template
* modify the trigger section to use
develop since OpenBLAS primarily uses
this branch; use the same batching
behavior as downstream projects NumPy/
SciPy
* remove Travis emulated ARMv6 gcc build
because this now happens in Azure
* use documented Ubuntu vmImage name for Azure
and add in a manylinux1 test run to the matrix
[skip appveyor]