Update .helmignore: ensure README present in package

Update the .helmignore file

Ensure README is present in helm package.
Remove other spurious files.

Signed-off-by: Jason Plum <jplum@gitlab.com>
10 jobs for 1279-include-readme-in-helm in 46 minutes and 51 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Prepare
passed #191705941
check_docs_internal_links

00:00:28

passed #191705940
danger-review

00:00:53

 
  Review
passed #191705942
review

00:07:08

passed #191705943
allowed to fail manual
stop_review

00:00:57

 
  Specs
passed #191705944
review_specs

00:11:58

 
  Qa
skipped #191705947
debug_review
failed #191728092
allowed to fail
qa

00:24:39

passed #191705946
review_helm_test

00:00:41

failed #191705949
allowed to fail
qa

00:31:18

 
  Package
passed #191705950
lint_package

00:00:32

 
Name Stage Failure
failed
qa Qa
rspec ./qa/specs/features/browser_ui/3_create/merge_request/view_merge_request_diff_patch_spec.rb:16 # Create Download merge request patch and diff user views merge request email patches
rspec ./qa/specs/features/browser_ui/3_create/merge_request/view_merge_request_diff_patch_spec.rb:25 # Create Download merge request patch and diff user views merge request plain diff

Randomized with seed 1167

Uploading artifacts...
./gitlab-qa-run-*: found 36 matching files
Uploading artifacts to coordinator... ok
id=191728092 responseStatus=201 Created token=7S4_LMm5
ERROR: Job failed: exit code 1