Add support for setting security context into ephemeral container specs about kubectl-netshoot HOT 3 OPEN

$ kubectl debug -it nginx --image=ubuntu --target=nginx --security-context='{"capabilities":{"add":["NET_BIND_SERVICE"],"drop":["all"]}}' -- /bin/bash                                    
Targeting container "nginx". If you don't see processes from this container it may be because the container runtime doesn't support this feature.
Defaulting debug container name to debugger-5sgx7.
If you don't see a command prompt, try pressing enter.
root@nginx:/# 
root@nginx:/# grep Cap /proc/$$/status
CapInh:	0000000000000000
CapPrm:	0000000000000400
CapEff:	0000000000000400
CapBnd:	0000000000000400
CapAmb:	0000000000000000

$ kubectl get po nginx -oyaml                                                                                                                                                                                                                    
apiVersion: v1
kind: Pod
...
  ephemeralContainers:
  - command:
    - /bin/bash
    image: ubuntu
    imagePullPolicy: Always
    name: debugger-5sgx7
    resources: {}
    securityContext:
      capabilities:
        add:
        - NET_BIND_SERVICE
        drop:
        - all
...