Switch on xml-tests

Some tests that use external tools were switched off because of UGENE-2085. They should be switched on.

Chip-seq_suite.xml:
test_0002(pack).xml,
test_0001.xml,
negative/test_0001(empty_input).xml,
negative/test_0002(wrong_input_format).xml,
parameters_variation/test_0001(wig_prof_res=200).xml,
parameters_variation/test_0002(wig_space=50).xml,
parameters_variation/test_0003(tag_size=200).xml,
parameters_variation/test_0004(keep_dupl=all).xml,
parameters_variation/test_0005(use_model=false).xml,
parameters_variation/test_0006(band_width=1000).xml,
parameters_variation/test_0007(P2G_distance=1000).xml,
parameters_variation/test_0008(Gene_universe=hgu133b).xml