Enabled IPPMorphReplicate in case BORDER_CONSTANT only for 3x3 kernels.
Disabled ippiConvert_32f16s_C1R since it breaks OCL accuracy tests of remap with test_loop_times=30.
Disabled some IPP calls of cvtColor since it breaks OCL accuracy tests
with test_loop_times=30
Merge pull request #3075 from akarsakov:ipp_imgproc_fix