set-ssh-password fails when building using container image built using custom base image (Photon)

[sriramandev]

Environment

• Make target: make build-node-ova-vsphere-photon-5
• **Run using container image? (Y/N): Yes

What steps did you take and what happened?

Create a custom Dockerfile(with base docker image as Photon-5 which packages IB code(this is similar to Dockerfile present in the repo with difference in base image and addition of custom playbook roles).
When running the build, generation of random password will fail. This is because Photon uses toybox grep rather than GNU grep. Options like -P and -o are not available in OS like Photon (which uses toybox toolkit), Alpine Linux (which I guess uses busybox toolkit) and even Mac(does not have -P).

What did you expect to happen?

Successful build

Relevant log output

Log Output

+ IB_OVFTOOL=1
+ ANSIBLE_TIMEOUT=180
+ IB_OVFTOOL_ARGS=--allowExtraConfig
+ make build-node-ova-vsphere-photon-5
grep: Unknown option 'Po' (see "grep --help")
make: *** [Makefile:192: set-ssh-password] Error 2

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/kind bug

[sriramandev]

/assign