Description of problem: When we try to set any valid/invalid rsync options in the migrationcontroller, the log-reader is not showing any logs regarding the invalid options or about the rsync command being used

Severity: Medium

Version-Release number of selected component (if applicable):
MTC 1.7.1

Steps to reproduce:
1. Create a new project and PVC inside that project 
$ oc new-project ocp-40342-invalidrsyncopts

$ cat <<EOF | oc create -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  namespace: ocp-40342-invalidrsyncopts
  name: test-data
spec:
  accessModes:
  - ReadWriteOnce
  resources:
	requests:
  	storage: 1Gi
EOF

2. Create deployment for the PVC to be Bound
cat <<EOF | oc create -f -
apiVersion:  apps/v1
kind: Deployment
metadata:
  labels:
	app: pod-test
  name: pod-test
  namespace: ocp-40342-invalidrsyncopts
spec:
  replicas:  1
  selector:
	matchLabels:
  	app: resize-test
  template:
	metadata:
  	labels:
    	app: resize-test
	spec:
  	containers:
  	- name: podtest
    	imagePullPolicy: Always
    	image: alpine
    	command: [ "/bin/sh", "-c", "--" ]
    	args: [ "while true; do sleep 30; done;" ]
    	restartPolicy: Never
    	volumeMounts:
    	- name: testvolume
      	mountPath: /data/test
  	volumes:
  	- name: testvolume
    	persistentVolumeClaim:
      	claimName: test-data
EOF

3. Patch the migration controller using one valid and one invalid rsync option
oc -n openshift-migration patch migrationcontroller migration-controller  -p '{"spec":{"rsync_opt_extras": "--myextraoption;semicolon", "rsync_opt_bwlimit": "220"}  }' --type='merge';

4. Create the migplan and execute the migration


Actual Result: Log-reader pod is not showing any logs  

Expected Result: Log-reader pod should be having logs regarding new rsync options.  
$ oc -n openshift-migration logs $(oc get pods -l logreader=mig -oname) -c plain |grep semicolon | grep -i invalid

migration-controller-7dd95b5d4-8t4tr mtc {"level":"info","ts":1615996033.166493,"logger":"direct|p9m2n","msg":"Invalid Rsync extra option passed: --myextraoption;semicolon","direct":"openshift-migration/bb42e800-8736-11eb-9e96-c3b93930310e-zr4lf"}

- The command should use the other valid option

$ oc -n openshift-migration logs $(oc get pods -l logreader=mig -oname) -c plain |grep bwlimit=220

migration-controller-7dd95b5d4-8t4tr mtc {"level":"info","ts":1615996033.1665113,"logger":"direct|p9m2n","msg":"Using Rsync command [rsync --bwlimit=220 --archive --delete --recursive --hard-links --partial --info=COPY2,DEL2,REMOVE2,SKIP2,FLIST2,PROGRESS2,STATS2 --human-readable --port 2222 --log-file /dev/stdout /mnt/ocp-40342-invalidrsyncopts/test-data/ rsync://root.248.87/test-data]","direct":"openshift-migration/bb42e800-8736-11eb-9e96-c3b93930310e-zr4lf"}