Prevent that an existing chart in a repository gets overwritten
by an incoming chart with the same version or same sha256 digest.
If there is a matching digest against a chart in the repository then the
upload is rejected and the script exits with error code 2. If there is a
matching version against a chart in the repository that has a different
content then the upload is also rejected but with error code 3.
Test Plan:
PASS: build-pkgs && build-image
PASS: AIO-SX fresh install
PASS: Upload chart vault-0.24.3.tgz to stx-platform repository
Check if the chart was correctly uploaded to
/var/www/pages/helm_charts/stx-platform/
Check if the index.yaml file was regenerated accordingly
PASS: Upload chart vault-0.24.3.tgz to stx-platform repository
Try to upload the same chart again to the same repository
Confirm that the upload was refused
PASS: Upload chart vault-0.24.3.tgz to stx-platform repository
Change an image tag and repackage the chart keeping the
same version
Try to upload the changed chart again to the same repository
Confirm that the upload was refused
Story: 2010929
Task: 48883
Change-Id: I974a627d31876c7e2cfd1df05b03c252d958a4d5
Signed-off-by: Igor Soares <Igor.PiresSoares@windriver.com>