Change unset-memory-requirements check

[janisz]

Currently the unset-memory-requirements requires both requests and limits. This is redundant as request if not set will be copied from limits. The memory differs from CPU as with not enough CPU the container will slow down while with missing memory it will be killed. That's why requirements and limits should be set to same value.

The change should happen in check template definition

kube-linter/pkg/builtinchecks/yamls/unset-memory-requirements.yaml

Line 11 in 24d1fe3

requirementsType: "any"

As well as in the related tests:

kube-linter/e2etests/bats-tests.sh

Line 916 in e68f7d1

@test "unset-memory-requirements" {

• Change unset-cpu-requirements check #694
• What if you specify a container's limit, but not its request?