go ES rollover do not work with predefined index prefixes

[pupseba]

Setting a INDEX_PREFIX variable will result in rollover jobs failing since moving from the python to the go code for this component

jaeger/cmd/es-rollover/app/rollover/action.go

Line 65 in 5ea0d8f

aliases = append(aliases, client.Alias{

For example, setting a prefix of "jaeger-operator" for the generated indices in the ES, will result in a search for indices called "jaeger-operatorjaeger-" instead of indices prefixed with "jaeger-operator" and a search of "jaeger-operator-".

[pupseba]

Duplicate of #3441 and fixed by #3457. Already announced in 1.30.0 Release notes https://github.com/jaegertracing/jaeger/releases/tag/v1.30.0