Upgrade from Pravega version<0.7 to Pravega Version>=0.7 with external access enabled is failing

[Prabhaker24]

Description

Because of the changes for fixing of #312 we have modified the name of the segment store for versions above 0.7 but have not changed the service name and the script that runs as part of the creation of segment store needs the new service name.

Importance

Must have

Location

upgrade.go

Suggestions for an improvement

In the upgrade.go while deleting the segment store pod for version <0.7 remove the service as well

[jkhalack]

Please, take into account that upgrade from 0.7.0 pravega that was deployed with 0.4.x releases of pravega-operator is failing too (the previous versions of pravega-operator used uniform naming for all versions of pravega).

[Prabhaker24]

this is fixed this pr #368