Start using staticchecker in lint.

[Sharpz7]

Current problems from this lint check include:

Move to using named import in install package.

We should install github.com/armadaproject/armada-operator/apis/install/v1alpha1 once, as we do here instead of installing it at:

• https://github.com/armadaproject/armada-operator/blob/main/controllers/install/binoculars_controller_unit_test.go#L18
• https://github.com/armadaproject/armada-operator/blob/main/controllers/install/executor_controller_unit_test.go#L18

And in all other unit tests.

This produces https://staticcheck.io/docs/checks#ST1019 in vscode with the golang extension

Check for error before defering in e2e tests:

For example https://github.com/armadaproject/armada-operator/blob/main/controllers/install/binoculars_controller_e2e_test.go#L39