Add vault client initialization check

Make a request when creating the client to see if the Vault is unsealed and available for operation.

@yordan.kinkov @valerii.kalashnikov

changed milestone to %Sprint 10

added DevInProgress label

requested review from @tziai

assigned to @lyuben.penkovski

changed the description

added 3 commits

• 1eb46b69 - 1 commit from branch main
• a69e1c11 - Update golib to the latest version
• 2f0d6a2f - Add vault client initialization check

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added 1 commit

• 47f17a0b - Add vault client initialization check

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LGTM

approved this merge request

@lyuben.penkovski approved

mentioned in commit cf8daa9c

merged

mentioned in commit 736f9d9d