tests: Validate owner users also in check_has_permission_policies.
tests: Validate owner users also in check_has_permission_policies.

We should validate owner user also for all policy values. This is
important when we will add tests for POLICY_NOBODY in next commit.

kou/zulip,zulip/zulip,eeshangarg/zulip,eeshangarg/zulip,kou/zulip,zulip/zulip,zulip/zulip,rht/zulip,eeshangarg/zulip,andersk/zulip,rht/zulip,zulip/zulip,rht/zulip,eeshangarg/zulip,rht/zulip,kou/zulip,eeshangarg/zulip,rht/zulip,andersk/zulip,rht/zulip,rht/zulip,zulip/zulip,andersk/zulip,eeshangarg/zulip,kou/zulip,eeshangarg/zulip,andersk/zulip,andersk/zulip,kou/zulip,kou/zulip,zulip/zulip,zulip/zulip,andersk/zulip,kou/zulip,andersk/zulip