reef: mgr/telemetry: make sure histograms are formatted in all commands

[ljflores]

I noticed that histograms weren't getting formatted in preview-all and show-all. I made a few tweaks so they are properly formatted now.

I verified this fix on:
ceph telemetry preview
ceph telemetry preview-all
ceph telemetry show
ceph telemetry show-all

Note that only the all commands were affected.

Fixes: https://tracker.ceph.com/issues/58050
Signed-off-by: Laura Flores lflores@redhat.com
(cherry picked from commit 277350e)

Reef backport of #48948
Backport tracker: https://tracker.ceph.com/issues/58980

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[ljflores]

Rados suite review: https://pulpito.ceph.com/?branch=wip-yuri-testing-2023-03-14-0714-reef

Failures, unrelated:
1. https://tracker.ceph.com/issues/59123
2. https://tracker.ceph.com/issues/56393
3. https://tracker.ceph.com/issues/59281
4. https://tracker.ceph.com/issues/59282
5. https://tracker.ceph.com/issues/51964
6. https://tracker.ceph.com/issues/59284
7. https://tracker.ceph.com/issues/56445
8. https://tracker.ceph.com/issues/58130
9. https://tracker.ceph.com/issues/59057
10. https://tracker.ceph.com/issues/59285
11. https://tracker.ceph.com/issues/59286
12. https://tracker.ceph.com/issues/58560

Details:
1. Timeout opening channel - Infrastructure
2. failed to complete snap trimming before timeout - Ceph - RADOS
3. JSONDecodeError: Expecting property name enclosed in double quotes - Ceph - Mgr
4. OSError: [Errno 107] Transport endpoint is not connected - Infrastructure
5. qa: test_cephfs_mirror_restart_sync_on_blocklist failure - Ceph - CephFS
6. Missing /home/ubuntu/cephtest/archive/coredump file or directory - Tools - Teuthology
7. Command failed on smithi162 with status 123: "find /home/ubuntu/cephtest/archive/syslog -name '*.log' -print0 | sudo xargs -0 --no-run-if-empty -- gzip --" - Tools - Teuthology
8. LibRadosAio.SimpleWrite hang and pkill - Ceph - RADOS
9. rados/test_envlibrados_for_rocksdb.sh: No rule to make target 'rocksdb_env_librados_test' on centos 8 - Ceph - RADOS
10. mon/mon-last-epoch-clean.sh: TEST_mon_last_clean_epoch failure due to stuck pgs - Ceph - RADOS
11. mon/test_mon_osdmap_prune.sh: test times out after 5+ hours - Ceph - RADOS
12. rook: failed to pull kubelet image - Ceph - Orchestrator