OCM-19812: Improve local development documentation

[Alcamech]

What type of PR is this?

Documentation

What this PR does / why we need it?

Updates the local development.md documentation to:

• Add step to delete the leader lease when scaling down the deployed MUO
• Make the LOCAL mode ConfigMap step mandatory (not optional) for local development
• Add UpgradeConfigSyncFailureOver4HrSRE to ignoredCriticals in the test ConfigMap (this al
  ert fires when the deployed MUO is scaled down)
• Clarify that the operator must run as the MUO service account to bypass webhooks
• Add OSDK_FORCE_RUN_MODE=local requirement for routes (both env vars are needed)
• Fix inconsistent section header levels

Which Jira/Github issue(s) this PR fixes?

Fixes OCM-19812

[openshift-ci-robot]

@Alcamech: This pull request references OCM-19812 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.22.0" version, but no target version was set.

Details

In response to this:

What type of PR is this?

Documentation

What this PR does / why we need it?

Updates the local development.md documentation to:

• Add step to delete the leader lease when scaling down the deployed MUO
• Make the LOCAL mode ConfigMap step mandatory (not optional) for local development
• Add UpgradeConfigSyncFailureOver4HrSRE to ignoredCriticals in the test ConfigMap (this al
  ert fires when the deployed MUO is scaled down)
• Clarify that the operator must run as the MUO service account to bypass webhooks
• Add OSDK_FORCE_RUN_MODE=local requirement for routes (both env vars are needed)
• Fix inconsistent section header levels

Which Jira/Github issue(s) this PR fixes?

Fixes OCM-19812

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Alcamech
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[openshift-ci]

@Alcamech: all tests passed!

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Details

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[rawsyntax]

LGTM