[FEATURE] Support for Pointing one ALIAS to another ALIAS

[skathiva]

Is your feature request related to a problem?

There is no support for pointing one ALIAS to another ALIAS. In current situation, if an INDEX is pointed to multiple ALIASES then any change in INDEX name requires updating of all ALIASES where it is referred.

What solution would you like?

Add support for pointing one ALIAS to another ALIAS

What alternatives have you considered?

Apache Solr supports pointing one ALIAS to another ALIAS

Do you have any additional context?

Below is the sample alias configuration supported by Apache Solr
{
"collection": {
"search_alias":"alias_1,alias_2,alias_3,alias_4,alias_5",
"search_alias_1":"alias_4,alias_5",
"search_alias_2":"alias_5",
"alias_1":"index_1",
"alias_2":"index_2",
"alias_3":"index_3",
"alias_4":"index_4",
"alias_5":"index_5",
}
}

[anasalkouz]

@nandi-github what do you think? Seems to be a good feature, but we need to avoid infinite loops and may be to put some limitation on the alias depth.