Description of problem: 

When performing a baremetal IPI deployment, if you use capital letters in the bootMACAddress of the hosts section of install-config.yaml the metal3 pod will fail to start because of a case sensitive grep that is being used to match MAC addresses in the static-ip-set init container.


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


How reproducible:

Every time

Steps to Reproduce:

1. Perform a BM IPI deployment 
2. Use capital letters in bootMACAddress in the hosts section of install-config.yaml
3. Observe metal3 pod crashloop

Actual results:

Although cluster deployment is successful, the metal3 pod experiences continual crashloops

Expected results:

Successful deployment with no errors

Additional info:

There is an init container in metal3 called static-ip-set. This container does a grep -q of mac addresses to determine a match.  Because of the capital letters in the bootMACAddress of the host in the install-config.yaml, the grep fails. Would be better to do a case-insensitive grep.  

https://github.com/openshift/ironic-static-ip-manager/blob/master/set-static-ip#L11

$ oc -n openshift-machine-api get pods
NAME                                           READY   STATUS                  RESTARTS       AGE
cluster-autoscaler-operator-7965fd9b98-nfwfn   2/2     Running                 0              42m
cluster-baremetal-operator-69b6999f5d-pl2jg    2/2     Running                 2 (14m ago)    42m
machine-api-controllers-7954497b69-djh6t       7/7     Running                 0              14m
machine-api-operator-f6fdd96df-4l6jf           2/2     Running                 0              42m
metal3-6dfcdb9554-mt6bz                        0/10    Init:CrashLoopBackOff   7 (107s ago)   13m
metal3-image-cache-7jszr                       0/1     Init:0/2                1 (2m4s ago)   13m
metal3-image-cache-8mbj2                       0/1     Init:0/2                1 (97s ago)    13m
metal3-image-cache-nzrw5                       0/1     Init:0/2                1 (93s ago)    13m

$ oc -n openshift-machine-api logs metal3-6dfcdb9554-mt6bz -c metal3-static-ip-set
+ '[' -z 172.22.0.3/24 ']'
+ '[' -z '' ']'
+ '[' -n 14:18:77:32:5B:6A,14:18:77:32:28:6F,14:18:77:32:4E:9A ']'
+ for mac in ${PROVISIONING_MACS//,/ }
+ ip -br link show up
+ grep -q 14:18:77:32:5B:6A
+ for mac in ${PROVISIONING_MACS//,/ }
+ ip -br link show up
+ grep -q 14:18:77:32:28:6F
+ for mac in ${PROVISIONING_MACS//,/ }
+ ip -br link show up
+ grep -q 14:18:77:32:4E:9A
+ '[' -n '' ']'
+ echo 'ERROR: Could not find suitable interface for "172.22.0.3/24"'
ERROR: Could not find suitable interface for "172.22.0.3/24"