COMPMID-3287: Test improvement for CLGEMMReshapeLHSMatrixKernel (Kernel-level)

COMPMID-3287: Test improvement for CLGEMMReshapeLHSMatrixKernel (Kernel-level)

Removed configuration tests as they don't add any real value.
Since this is a memory copy kernel, I removed all the large shapes
and created all possible configurations across the 3 data layouts.
From a total of 21329 nightly and 1169 precommit tests now we have
545 in both cases with a larger test space.

Change-Id: I363caab64654064d2779a0ba847f522dfe388091
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3118
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>