state/apiserver/uniter: tear down test panics if there is a test failure

[Dave Cheney]

[LOG] 0:00.183 DEBUG juju.state connection established
uniter_test.go:54:
    s.JujuConnSuite.SetUpTest(c)
/home/ubuntu/juju-core_1.19.5/src/github.com/juju/juju/juju/testing/conn.go:229:
    c.Assert(err, gc.IsNil)
... value *errors.errorString = &errors.errorString{s:"cannot create database index: local error: bad record MAC"} ("cannot create database index: local error: bad record MAC")

----------------------------------------------------------------------
PANIC: uniter_test.go:1: uniterSuite.TearDownTest

... Panic: runtime error: invalid memory address or nil pointer dereference (PC=0x4146B6)

/usr/lib/go/src/pkg/runtime/panic.c:248
  in panic
/usr/lib/go/src/pkg/runtime/panic.c:482
  in panicstring
/usr/lib/go/src/pkg/runtime/os_linux.c:234
  in sigpanic
/home/ubuntu/juju-core_1.19.5/src/github.com/juju/juju/state/state.go:1494
  in State.SetAdminMongoPassword
/home/ubuntu/juju-core_1.19.5/src/github.com/juju/juju/juju/testing/conn.go:270
  in JujuConnSuite.tearDownConn
/home/ubuntu/juju-core_1.19.5/src/github.com/juju/juju/juju/testing/conn.go:94
  in JujuConnSuite.TearDownTest
/usr/lib/go/src/pkg/runtime/asm_amd64.s:338
  in call16

----------------------------------------------------------------------
PANIC: uniter_test.go:1026: uniterSuite.TestRelationById

... Panic: Fixture has panicked (see related PANIC)
OOPS: 33 passed, 1 FAILED, 1 FIXTURE-PANICKED, 12 MISSED
--- FAIL: Test (14.83 seconds)
FAIL
FAIL github.com/juju/juju/state/apiserver/uniter 14.990s

[Dave Cheney (dave-cheney)]

https://bugs.launchpad.net/juju-core/+bug/1337050