nfv client shows raw REST results for 500 errors

[Al Bailey]

Brief Description
-----------------
When "sw-manager <some strategy> apply" receives a 500 error, the CLI shows a mess of raw REST results.
This issue is purely cosmetic but should be cleaned up.
there are 2 print statements in the rest_api.py for nfv_client that should be removed.

Severity
--------
Minor

Steps to Reproduce
------------------
sw-manager kube-rootca-update-strategy create
sw-manager kube-rootca-update-strategy apply
( then apply a second time after it has completed or failed)
sw-manager kube-rootca-update-strategy apply

Expected Behavior
------------------
Should not show a mess

Actual Behavior
----------------
 sw-manager kube-rootca-update-strategy apply
Rest-API status=500, POST, http://192.168.204.2:4545/api/orchestration/kube-rootca-update/strategy/actions, headers={'Content-Type': 'application/json', 'X-User': 'admin', 'X-Tenant': 'admin', 'X-User-Domain-Name': 'Default', 'X-Auth-Token': 'gAAAAABjdSoXwtpkom3PvHAZ85V-lHCjfUdabsfR17vx0DJ8JYLVxUEkpI2TXhPiIrcdW0EbIFdRVwKOHop8o-s2KqAkD4lokTGCGgUeGXnuGFtxQDKoXBFhAY7GVpLgQXnSruJ8e9WZuLAOlF7LfYYXzY4vZ5P5R0D5ovMxvLKGFKy1vM3i-O8'}, payload={"action": "apply-all"}, response=b'{"faultcode": "Server", "faultstring": "The server has either erred or is incapable of performing the requested operation.", "debuginfo": null}'
HTTP Error 500: Internal Server Error

Reproducibility
---------------
100% If the strategy is in a scenario where it will report a 500 failure (like there are active alarms, or the strategy has already been applied)

System Configuration
--------------------
AIO-SX

Branch/Pull Time/Commit
-----------------------
Nov 16 2022

Last Pass
---------
N/A

Timestamp/Logs
--------------
See the logs above

Test Activity
-------------
Developer Testing

Workaround
----------
None. it is cosmetic.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/nfv/+/864779

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/nfv/+/864779
Committed: https://opendev.org/starlingx/nfv/commit/a0f06e0b1043d8e666b4288cd9c96fbd0a956066
Submitter: "Zuul (22348)"
Branch: master

commit a0f06e0b1043d8e666b4288cd9c96fbd0a956066
Author: Al Bailey <email address hidden>
Date: Wed Nov 16 18:43:55 2022 +0000

    Do not show raw results for failed nfv CLI calls

    The nfv_client rest_api was displaying raw REST
    API results when a CLI command received a 500 error.

    The printing of debug information has been removed
    and the 'reason' field in the HTTPError is now being
    displayed.

    Closes-Bug: #1996796

    Signed-off-by: Al Bailey <email address hidden>
    Change-Id: I244453cd2126923d5ad30ab38fb1796551ab8aed