golangci-lint: enable nolintlint

The nolintlint linter does not deny the use of `//nolint`
Instead it allows us to enforce a common nolint style:
- force that a linter name must be specified
- do not add a space between `//` and `nolint`
- make sure nolint is only used when there is actually a problem

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

test/e2e/common_test.go

@@ -41,7 +41,7 @@ var (
 	CGROUP_MANAGER     = "systemd"                   //nolint:revive,stylecheck
 	RESTORE_IMAGES     = []string{ALPINE, BB, nginx} //nolint:revive,stylecheck
 	defaultWaitTimeout = 90
-	CGROUPSV2, _       = cgroups.IsCgroup2UnifiedMode() //nolint:revive,stylecheck
+	CGROUPSV2, _       = cgroups.IsCgroup2UnifiedMode()
 )
 
 // PodmanTestIntegration struct for command line options