* Enable the errorAssertions govet check for mattermost-server code * Removing unnecesary change * Fixing some tests * Fixing tests * Fixing more after merge * Fixing new offending entries * Fixing small vet checks * Fixing new cases detected by govet * Fixing remote_cluster_test errors * Fixing assertion Co-authored-by: Mattermod <mattermod@users.noreply.github.com>