wrong role is coming for channels when querying by guid

When querying api/v1/channel, if you provide a username for your channel, you get the channel owner role, whereas if you provide the guid, you get the subscriber role

added 1 deleted label

added to epic &28 (closed)

added 1 deleted label

changed milestone to %Permission #review

assigned to @eiennohi

added StatusInProgress label

changed time estimate to 2h

changed the description

Turns out guid comes as string if you hydrate the entity via username, and as int if you hydrate it via guid. Just had to remove a strict check on the ChannelRoleCalculator

added 2h of time spent at 2019-10-04

added StatusReview label and removed StatusInProgress label

mentioned in merge request !350 (closed)

added TeamPlatform label

closed