SM API needs to encode/decode when communicate with SM

[Bin Qian]

SM API communicate to SM via socket. In python2 the str is automatically encoded to/decoded from ascii. Python3 requires explicitly encode/decode. This fails the communication between SM API and SM.

step to reporduce
-----------------
install a Debian StarlingX, try to unlock controller-1

Expected Behavior
-----------------
host unlocked

Actual Behavior
-----------------
Nothing happens, mtcAgent log 500 error from SM API request

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/ha/+/844302

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Bin Qian <email address hidden>" on branch: master
Review: https://review.opendev.org/c/starlingx/ha/+/844302
Reason: A review is already posted https://review.opendev.org/c/starlingx/ha/+/844052

[Al Bailey (albailey1974)]

this one is merging https://review.opendev.org/c/starlingx/ha/+/844052

[Bin Qian (bqian20)]

withdraw this issue, is fixed in https://review.opendev.org/c/starlingx/ha/+/844052

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/ha/+/844052
Committed: https://opendev.org/starlingx/ha/commit/924c088f3adc0ffc95ec14ad62ac742c7c78572f
Submitter: "Zuul (22348)"
Branch: master

commit 924c088f3adc0ffc95ec14ad62ac742c7c78572f
Author: Dan Voiculeasa <email address hidden>
Date: Tue May 31 16:14:06 2022 +0300

    py3: Fix sm-api communication

    mtcAgent get response code 500 from sm-api.

    Tests on AIO-DX:
    CentOS:
    PASS: unlocked enabled available controller-1
    Debian:
    integration not far enough to test controller-1 unlock
    PASS: mtcAgent gets a proper response from sm-api

    Story: 2009968
    Task: 45504
    Closes-Bug: 1976515
    Signed-off-by: Dan Voiculeasa <email address hidden>
    Change-Id: I5912f8d506d220775e2346f4b8771758cf818e3c