Updating docker images to resolve remaining vulnerabilities in azure, gc and ibm images

• Switching from slim to alpine since slim is slow to update/remove vulnerabilities for Azure, GC and IBM
• Updated requirements moving to Python SDK v0.28.0
• Updated Makefile for building/testing images
• Azure image no longer has it's own separate requirements.txt for image.
• Azure, GC and IBM are now using the same Dockerfile and should produce the same image - AWS has a potentially different base image (but should be the same).

Related to https://community.opengroup.org/osdu/platform/security-and-compliance/policy/-/issues/150 and !551 (merged)

changed milestone to %M25 - Release 0.28

assigned to @hutchins

added Vulnerability Management label

added Azure GC IBM labels

changed the description

added 1 commit

• ae941761 - update azure test pipeline to use apline image

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• 2cc6357d - updating azure image and integration test

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marked this merge request as ready

requested review from @hutchins

requested review from @dadong.zhou

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merged

mentioned in commit abe21513