Raise memory request and limit for prebuild task
Raise memory request and limit for prebuild task

CLOUDBLD-10932

Some prebuild tasks were getting OOMKilled while generating content
manifests. The improvements to add_image_content_manifest code should
help with that, but based on the investigation, the tasks were still
approaching the 600 Mi limit even after the changes.

Bump the limit to 1Gi, which should be safe even for builds with very
large ICMs. The pipeline should still fit within the same memory quota,
since the quota is calculated based on parallel build task requirements
=> 4x 600 Mi = 2400 Mi.

Signed-off-by: Adam Cmiel <1217f9865bd733d1bcad0d0d64be310272c5592c@redhat.com>

fr34k8/atomic-reactor,fr34k8/atomic-reactor