DeploymentConfig pre hook execPods do not mirror the tolerations of the DC

When creating a DeploymentConfig with:
- Recreate strategy
- Tolerations defined in the template
- Pre/Post execPod definitions

The execPods do not have the same tolerations as the DeploymentConfig.

When this is run in an environment where taints/tolerations are heavily used to control workload, this is resulting in scheduling failures for the hook Pods.

OpenShift 4.10.20

Everytime

1. Create a Deployment Config matching that described in the Description
2. Inspect the ExecPods for tolerations

ExecPods do not have Tolerations

ExecPods to have Tolerations

Reviewing the relevant controller code for the recreate strategy, the code for processing the pre/post hook definitions appears to be here. [0] This creates a `deployer` Pod which DOES have tolerations.[1][2] 

This `deployer` Pod then creates the pre/post hook exec Pods [3][4][5] but does not appears to set any tolerations on these Pods [6].

Resources:
[0] https://github.com/openshift/openshift-controller-manager/blob/master/pkg/apps/deployer/deployer_controller.go/#L356-L446
[1] https://github.com/openshift/openshift-controller-manager/blob/master/pkg/cmd/controller/apps.go/#L31-L32
[2] https://github.com/openshift/openshift-controller-manager/blob/master/vendor/github.com/openshift/api/openshiftcontrolplane/v1/types.go/#L164-L199
[3] Deployer image definition:
    https://github.com/openshift/oc/blob/master/images/deployer/Dockerfile.rhel
[4] Deployer Commands:
    https://github.com/openshift/oc/blob/dd2bcd0b8/pkg/cli/cli.go/#L345-L346
    https://github.com/openshift/oc/blob/dd2bcd0b8/pkg/cli/deployer/deployer.go/#L69-L97
[5] The exec hook pods are created:
    https://github.com/openshift/oc/blob/dd2bcd0b8/pkg/cli/deployer/strategy/support/lifecycle.go/#L354-L423
[6] The exec hook Pod generation doesn't define Toleration:
    https://github.com/openshift/oc/blob/dd2bcd0b8/pkg/cli/deployer/strategy/support/lifecycle.go/#L435-L473