elastic: Create the metadata-fetcher secret to all namespaces
Currently only the loaders git really use it but they all need to mount the secret
volume (since it's using the same declaration). So it needs to be present in all
namespaces [1].
[1]
for TYPE in git bzr cvs maven pypi npm svn; do; kubectl apply -f loaders-metadata-fetcher.secret.yaml --namespace ns-loaders-$TYPE; done secret/metadata-fetcher-credentials configured secret/metadata-fetcher-credentials created secret/metadata-fetcher-credentials created secret/metadata-fetcher-credentials created secret/metadata-fetcher-credentials created secret/metadata-fetcher-credentials created secret/metadata-fetcher-credentials created
Related to T4144