Non-deterministic consequence annotations

[dennishendriksen]

Caused by Ensembl/ensembl-vep#1598

Can cause test failures:

running tests ...
vcf/aip                                  | PASSED | 226457=completed test/output/vcf/aip/.nxf.log
vcf/chd7                                 | PASSED | 226458=completed test/output/vcf/chd7/.nxf.log
vcf/corner_cases                         | PASSED | 226459=completed test/output/vcf/corner_cases/.nxf.log
vcf/deb_register                         | PASSED | 226460=completed test/output/vcf/deb_register/.nxf.log
vcf/empty_input                          | PASSED | 226461=completed test/output/vcf/empty_input/.nxf.log
vcf/empty_output_filter_samples          | PASSED | 226462=completed test/output/vcf/empty_output_filter_samples/.nxf.log
vcf/empty_output_filter                  | PASSED | 226463=completed test/output/vcf/empty_output_filter/.nxf.log
vcf/filter_samples                       | PASSED | 226464=completed test/output/vcf/filter_samples/.nxf.log
vcf/liftover                             | PASSED | 226465=completed test/output/vcf/liftover/.nxf.log
vcf/multiproject_classify                | PASSED | 226466=completed test/output/vcf/multiproject_classify/.nxf.log
vcf/mvid                                 | PASSED | 226467=completed test/output/vcf/mvid/.nxf.log
vcf/str                                  | PASSED | 226468=completed test/output/vcf/str/.nxf.log
vcf/trio                                 | PASSED | 226469=completed test/output/vcf/trio/.nxf.log
vcf/vkgl_lb                              | FAILED | 226470=completed test/output/vcf/vkgl_lb/.nxf.log
vcf/vkgl_lp                              | PASSED | 226471=completed test/output/vcf/vkgl_lp/.nxf.log
vcf/vkgl_vus                             | PASSED | 226472=completed test/output/vcf/vkgl_vus/.nxf.log
done