fix python test microservice flakiness

[RafalSkolasinski]

What this PR does / why we need it:

Send SIGKILL to test microservice spawn as subprocess to make sure that it is killed after the test.

Which issue(s) this PR fixes:

Closes #2293
Closes #1745

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[seldondev]

Thu Aug 27 13:49:47 UTC 2020
The logs for [lint] [2] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=2

[seldondev]

Thu Aug 27 13:50:01 UTC 2020
The logs for [pr-build] [1] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=1

[RafalSkolasinski]

/test this

[seldondev]

Thu Aug 27 14:06:54 UTC 2020
The logs for [pr-build] [3] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/3.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=3

[RafalSkolasinski]

/test this

[seldondev]

Thu Aug 27 14:22:38 UTC 2020
The logs for [pr-build] [4] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/4.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=4

[RafalSkolasinski]

/test this

[seldondev]

Thu Aug 27 14:55:05 UTC 2020
The logs for [pr-build] [5] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/5.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=5

[seldondev]

Thu Aug 27 15:03:03 UTC 2020
The logs for [pr-build] [6] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/6.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=6

[seldondev]

Thu Aug 27 15:03:13 UTC 2020
The logs for [lint] [7] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/7.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=7

[RafalSkolasinski]

/test this

[seldondev]

Thu Aug 27 15:28:46 UTC 2020
The logs for [pr-build] [8] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/8.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=8

[RafalSkolasinski]

/test this

[seldondev]

Thu Aug 27 15:48:42 UTC 2020
The logs for [pr-build] [9] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/9.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=9

[RafalSkolasinski]

last one
/test this

[seldondev]

Thu Aug 27 16:18:54 UTC 2020
The logs for [pr-build] [10] will show after the pipeline context has finished.
https://github.com/SeldonIO/seldon-core/blob/gh-pages/jenkins-x/logs/SeldonIO/seldon-core/PR-2336/10.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-2336 --build=10

[RafalSkolasinski]

@axsaucedo this passed many times - I think it's ready to merge :)

[axsaucedo]

Nice one - change looks quite reasonable, looks good as a fix for flakiness for now.
/approve

[seldondev]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: axsaucedo

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [axsaucedo]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment