Use md5 hash for session name when assuming Org Role in new backplane flow

[AlexVulaj]

What type of PR is this?

feature

What this PR does / Why we need it?

See https://docs.google.com/document/d/1hFlKGy2tInRJwWA28TYEsrTri4CwebVR7TdsG6LmObI/edit

Which Jira/Github issue(s) does this PR fix?

OSD-20300

Pre-checks (if applicable)

• Ran unit tests locally
• Validated the changes in a cluster
• Included documentation changes with PR

To test locally, find a cluster that uses the new backplane flow, then -

make build
./path/to/new/exec cloud console <cluster_id>

[AlexVulaj]

/hold

This needs to wait for a new backplane-api deployment with these changes. We are currently figuring out build issues affecting multiple repositories in this thread.

[openshift-ci]

@AlexVulaj: all tests passed!

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[AlexVulaj]

/unhold

[hectorakemp]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AlexVulaj, hectorakemp

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