fix(trait): force a volume path when key is set

[essobedo]

fixes #3543

Motivation

When we try to run an integration that needs to mount a volume with filtering but without a path, it fails with `[spec.template.spec.volumes[2].secret.items[0].path: Required``

Modifications:

• Use the key when no mount path is proposed

Release Note

NONE

[tadayosi]

LGTM. Only one request is to cover the case with an E2E test.
Could you please add test runs with key filtering scenarios after the following ones for both configmap and secret?
https://github.com/apache/camel-k/blob/main/e2e/global/common/config/config_test.go#L84
https://github.com/apache/camel-k/blob/main/e2e/global/common/config/config_test.go#L143

[essobedo]

LGTM. Only one request is to cover the case with an E2E test. Could you please add test runs with key filtering scenarios after the following ones for both configmap and secret? https://github.com/apache/camel-k/blob/main/e2e/global/common/config/config_test.go#L84 https://github.com/apache/camel-k/blob/main/e2e/global/common/config/config_test.go#L143

Yes, of course, thx for the feedback, however, please note that I won't be able to do that before next week.

[tadayosi]

Yes, of course, thx for the feedback, however, please note that I won't be able to do that before next week.

OK, then let's merge this one as it's good that this bug is fixed in 1.10.0. I'll file another issue for you for the follow-up task. Thanks!