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Fix before_deploy

Fix after_success

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Merge bitnami-labs#325

325: Support parsing multiple private keys in --recovery-private-key r=mkmik a=mkmik

When following the backup procedure outlined in our FAQ, the users tend to get one single YAML file
that contains a `v1.List` object containing all the known sealing keypairs.
This is actually a good thing, since kubectl makes backing up multiple secrets so easy.
However, if the users pass such a file to --recovery-unseal --recovery-private-key it won't work since
that command expects single secrets (either encoded as PEM or as json/yaml encoded v1.Secret objects).

This change implements parsing v1.List of v1.Secrets (the output of `kubectl --namespace kube-system get secret -lsealedsecrets.bitnami.com/sealed-secrets-key -o yaml`)

Closes bitnami-labs#319

Co-authored-by: Marko Mikulicic <mkm@bitnami.com>

Merge bitnami-labs#314

314: Improve error reporting in case of missing kubeconfig when inferring namespace r=mkmik a=mkmik

Closes bitnami-labs#313

Co-authored-by: Marko Mikulicic <mkm@bitnami.com>

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Merge pull request bitnami-labs#304 from bitnami-labs/mkmik-patch-1

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