Dashboard filter out old namespace data from home screen (#4597)
Dashboard filter out old namespace data from home screen (#4597)

### Motivation

Duplicate namespace information was being shown in the home page e.g. Number of namespaces in a tenant.

### Modifications

On the home screen filter to include data only from namespaces with the current timestamp.
merlimat/pulsar,merlimat/pulsar,yahoo/pulsar,massakam/pulsar,merlimat/pulsar,merlimat/pulsar,massakam/pulsar,massakam/pulsar,yahoo/pulsar,merlimat/pulsar,yahoo/pulsar,yahoo/pulsar,yahoo/pulsar,yahoo/pulsar,massakam/pulsar,massakam/pulsar,massakam/pulsar,merlimat/pulsar