code: Refactor too long functions

[nirs]

We have 39 functions using //nolint:funlen to allow longer function. This typically means that the function need refactoring to make it shorter and simpler. Real case when longer functions are needed are very rare.

We need to review the functions and improve them.

% git grep -E 'nolint:.*funlen'
e2e/deployers/crud.go:// nolint:funlen
e2e/dractions/actions.go:// nolint:funlen
e2e/dractions/discovered.go:// nolint:funlen,cyclop
internal/controller/cephfscg/cghandler.go://nolint:funlen,gocognit,cyclop,gocyclo
internal/controller/cephfscg/replicationgroupdestination.go://nolint:cyclop,funlen
internal/controller/cephfscg/replicationgroupsource.go://nolint:funlen
internal/controller/cephfscg/volumegroupsourcehandler.go://nolint:funlen
internal/controller/cephfscg/volumegroupsourcehandler.go://nolint:funlen,cyclop
internal/controller/cephfscg/volumegroupsourcehandler.go://nolint:funlen,gocognit,cyclop
internal/controller/cephfscg/volumegroupsourcehandler.go://nolint:funlen
internal/controller/drplacementcontrol.go://nolint:funlen
internal/controller/drplacementcontrol.go://nolint:gocognit,cyclop,funlen
internal/controller/drplacementcontrol_controller.go://nolint:funlen
internal/controller/drplacementcontrol_controller.go://nolint:funlen,gocognit,gocyclo,cyclop
internal/controller/drplacementcontrol_controller.go://nolint:funlen
internal/controller/drplacementcontrol_controller.go://nolint:funlen,cyclop
internal/controller/drplacementcontrol_controller.go://nolint:funlen
internal/controller/drplacementcontrol_controller.go://nolint:funlen,nestif,gocognit,gocyclo,cyclop
internal/controller/drplacementcontrol_controller_test.go://nolint:funlen
internal/controller/drplacementcontrol_watcher.go://nolint:funlen
internal/controller/drpolicy_controller.go://nolint:cyclop,funlen
internal/controller/replicationgroupsource_controller.go://nolint:funlen
internal/controller/volsync/vshandler.go://nolint:cyclop,funlen
internal/controller/volsync/vshandler.go://nolint:funlen
internal/controller/volsync/vshandler.go://nolint:cyclop,funlen,gocognit
internal/controller/volsync/vshandler.go://nolint:funlen,gocognit,cyclop
internal/controller/volsync/vshandler.go://nolint:funlen
internal/controller/volsync/vshandler.go://nolint:funlen
internal/controller/volsync/vshandler_test.go://nolint:funlen
internal/controller/volumereplicationgroup_controller.go://nolint:funlen
internal/controller/vrg_volrep.go://nolint:gocognit,cyclop,funlen
internal/controller/vrg_volrep.go://nolint:funlen,cyclop,gocognit
internal/controller/vrg_volrep.go://nolint:funlen
internal/controller/vrg_volrep.go://nolint:funlen,gocognit,cyclop
internal/controller/vrg_volsync.go://nolint:gocognit,funlen,cyclop
internal/controller/vrg_volsync.go://nolint:gocognit,funlen,cyclop,gocyclo,nestif
internal/controller/vrg_volsync.go://nolint:gocognit,funlen,cyclop,nestif
internal/controller/vrg_volsync.go://nolint:gocognit,funlen,cyclop
internal/controller/vrg_volsync_test.go://nolint:funlen