Import bitbucket issues that are reported by an anonymous user

For these kind of issues, the "reporter" field is present but zero.
In such a case, "fetch" will not return the default value, but it will
return nil.
Hence, importing fails, because the "username" field of nil is referenced

Fixes issue #44381
89 jobs for fix/bitbucket_import_anonymous in 52 minutes and 55 seconds (queued for 14 seconds)
Status Job ID Name Coverage
  Build
manual #70229824
gitlab-org allowed to fail manual
review-docs-deploy
 
  Prepare
passed #70229826
gitlab-org
compile-assets

00:06:22

passed #70229825
gitlab-org
retrieve-tests-metadata

00:00:39

passed #70229827
gitlab-org
setup-test-env

00:13:00

 
  Test
passed #70229937
allowed to fail
codequality

00:08:36

passed #70229927
gitlab-org
db:check-schema-pg

00:02:52

passed #70229926
gitlab-org
db:migrate:reset-mysql

00:05:08

passed #70229925
gitlab-org
db:migrate:reset-pg

00:03:16

passed #70229931
gitlab-org
db:rollback-mysql

00:04:27

passed #70229930
gitlab-org
db:rollback-pg

00:03:29

passed #70229939
allowed to fail
dependency_scanning

00:04:48

passed #70229921
gitlab-org
docs lint

00:01:01

passed #70229923
gitlab-org
downtime_check

00:02:41

passed #70229924
gitlab-org
ee_compat_check

00:04:09

passed #70229935
gitlab-org
gitlab:assets:compile

00:10:02

passed #70229933
gitlab-org
gitlab:setup-mysql

00:04:01

passed #70229932
gitlab-org
gitlab:setup-pg

00:03:53

passed #70229942
gitlab-org
gitlab_git_test

00:01:24

passed #70229936
gitlab-org
karma

00:08:23

55.85%
passed #70229929
gitlab-org
migration:path-mysql

00:11:06

passed #70229928
gitlab-org
migration:path-pg

00:11:27

passed #70229940
gitlab-org
qa:internal

00:02:18

passed #70229941
gitlab-org
qa:selectors

00:03:40

passed #70229859
gitlab-org
rspec-mysql 0 30

00:13:15

passed #70229860
gitlab-org
rspec-mysql 1 30

00:15:12

passed #70229879
gitlab-org
rspec-mysql 10 30

00:12:51

passed #70229884
gitlab-org
rspec-mysql 11 30

00:19:46

passed #70229889
gitlab-org
rspec-mysql 12 30

00:14:06

passed #70229892
gitlab-org
rspec-mysql 13 30

00:17:41

passed #70229894
gitlab-org
rspec-mysql 14 30

00:10:23

passed #70229896
gitlab-org
rspec-mysql 15 30

00:13:59

passed #70229898
gitlab-org
rspec-mysql 16 30

00:12:52

passed #70229899
gitlab-org
rspec-mysql 17 30

00:13:29

passed #70229900
gitlab-org
rspec-mysql 18 30

00:15:20

passed #70229901
gitlab-org
rspec-mysql 19 30

00:13:18

passed #70229861
gitlab-org
rspec-mysql 2 30

00:12:18

passed #70229902
gitlab-org
rspec-mysql 20 30

00:13:35

passed #70229903
gitlab-org
rspec-mysql 21 30

00:11:24

passed #70229904
gitlab-org
rspec-mysql 22 30

00:16:23

passed #70229906
gitlab-org
rspec-mysql 23 30

00:11:32

passed #70229908
gitlab-org
rspec-mysql 24 30

00:11:55

passed #70229909
gitlab-org
rspec-mysql 25 30

00:17:11

passed #70229912
gitlab-org
rspec-mysql 26 30

00:13:43

passed #70229914
gitlab-org
rspec-mysql 27 30

00:17:12

passed #70229917
gitlab-org
rspec-mysql 28 30

00:15:15

passed #70229918
gitlab-org
rspec-mysql 29 30

00:18:07

passed #70229862
gitlab-org
rspec-mysql 3 30

00:12:12

passed #70229864
gitlab-org
rspec-mysql 4 30

00:13:21

passed #70229865
gitlab-org
rspec-mysql 5 30

00:12:44

passed #70229866
gitlab-org
rspec-mysql 6 30

00:16:54

passed #70229867
gitlab-org
rspec-mysql 7 30

00:13:22

passed #70229868
gitlab-org
rspec-mysql 8 30

00:16:22

passed #70229871
gitlab-org
rspec-mysql 9 30

00:12:27

passed #70229828
gitlab-org
rspec-pg 0 30

00:12:21

passed #70229829
gitlab-org
rspec-pg 1 30

00:13:04

passed #70229838
gitlab-org
rspec-pg 10 30

00:13:14

passed #70229839
gitlab-org
rspec-pg 11 30

00:15:18

passed #70229840
gitlab-org
rspec-pg 12 30

00:13:19

passed #70229841
gitlab-org
rspec-pg 13 30

00:15:22

passed #70229842
gitlab-org
rspec-pg 14 30

00:15:03

passed #70229843
gitlab-org
rspec-pg 15 30

00:12:46

passed #70229844
gitlab-org
rspec-pg 16 30

00:14:25

passed #70229845
gitlab-org
rspec-pg 17 30

00:16:09

passed #70229846
gitlab-org
rspec-pg 18 30

00:13:14

passed #70229847
gitlab-org
rspec-pg 19 30

00:12:37

passed #70229830
gitlab-org
rspec-pg 2 30

00:11:40

passed #70229848
gitlab-org
rspec-pg 20 30

00:12:48

passed #70229849
gitlab-org
rspec-pg 21 30

00:15:36

passed #70229850
gitlab-org
rspec-pg 22 30

00:15:45

passed #70229852
gitlab-org
rspec-pg 23 30

00:14:08

passed #70229853
gitlab-org
rspec-pg 24 30

00:15:58

passed #70229854
gitlab-org
rspec-pg 25 30

00:17:11

passed #70229855
gitlab-org
rspec-pg 26 30

00:15:49

passed #70229856
gitlab-org
rspec-pg 27 30

00:14:14

passed #70229857
gitlab-org
rspec-pg 28 30

00:13:32

passed #70229858
gitlab-org
rspec-pg 29 30

00:15:22

passed #70229831
gitlab-org
rspec-pg 3 30

00:11:13

passed #70229832
gitlab-org
rspec-pg 4 30

00:14:11

passed #70229833
gitlab-org
rspec-pg 5 30

00:11:15

passed #70229834
gitlab-org
rspec-pg 6 30

00:13:55

passed #70229835
gitlab-org
rspec-pg 7 30

00:10:31

passed #70229836
gitlab-org
rspec-pg 8 30

00:15:28

passed #70229837
gitlab-org
rspec-pg 9 30

00:14:12

passed #70229938
allowed to fail
sast

00:04:46

passed #70229919
gitlab-org
static-analysis

00:20:51

 
  Post Test
passed #70229946
gitlab-org
coverage

00:05:08

94.94%
passed #70229944
gitlab-org allowed to fail
flaky-examples-check

00:04:10

passed #70229948
gitlab-org
lint:javascript:report

00:04:22

 
  Post Cleanup
manual #70229951
gitlab-org allowed to fail manual
review-docs-cleanup