NO-ISSUE: Bump OCP versions: 4.15

[osherdp]

OpenShift updates: 4.15.0-ec.3 -> 4.15.0-rc.0, 4.15.0-ec.3-multi -> 4.15.0-rc.0-multi
RHCOS updates:

/test edge-e2e-metal-assisted-4-15
/cc @osherdp @gamli75

[openshift-ci-robot]

@osherdp: This pull request explicitly references no jira issue.

In response to this:

OpenShift updates: 4.15.0-ec.3 -> 4.15.0-rc.0, 4.15.0-ec.3-multi -> 4.15.0-rc.0-multi
RHCOS updates:

/test edge-e2e-metal-assisted-4-15
/cc @osherdp @gamli75

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[openshift-ci]

@osherdp: GitHub didn't allow me to request PR reviews from the following users: osherdp.

Note that only openshift members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

OpenShift updates: 4.15.0-ec.3 -> 4.15.0-rc.0, 4.15.0-ec.3-multi -> 4.15.0-rc.0-multi
RHCOS updates:

/test edge-e2e-metal-assisted-4-15
/cc @osherdp @gamli75

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: osherdp

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[gamli75]

/retest

[codecov]

Codecov Report

Merging #5821 (1ff8e23) into master (d41f536) will decrease coverage by 0.02%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5821      +/-   ##
==========================================
- Coverage   67.97%   67.95%   -0.02%     
==========================================
  Files         235      235              
  Lines       34480    34480              
==========================================
- Hits        23437    23432       -5     
- Misses       8978     8981       +3     
- Partials     2065     2067       +2     

see 4 files with indirect coverage changes

[openshift-ci]

@osherdp: all tests passed!

Full PR test history. Your PR dashboard.

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[gamli75]

duplicate of #5824