Always provide summary for non-healthy cluster.

This fixes bnc#902744, wherein calamari does not provide
popup drill-down for warnings or errors, should the summary
be missing.

Signed-off-by: Thorsten Behrens <tbehrens@suse.com>
Fix spec-violating extraneous unlock in RWLock dtor.

The test/cli/radosgw-admin/help.t crashed on a number of newer glibc
versions below RGWCache<RGWRados>::~RGWCache(), due to
pthread_rw_unlock being called w/o prior lock. POSIX says this is
no-no.

Signed-off-by: Thorsten Behrens <tbehrens@suse.com>
(cherry picked from commit 8ad97911b681e881b996b11c283741241c7e782d)