Add istio retries to docs

[ukclivecox]

Fixes #1707

[seldondev]

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[seldondev]

Mon May 18 14:19:43 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-1842/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1842 --build=2

[seldondev]

Mon May 18 14:19:49 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-1842/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1842 --build=1

[axsaucedo]

/test this

[seldondev]

Tue May 19 16:46:21 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-1842/3.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1842 --build=3

[ukclivecox]

/test this

[ukclivecox]

nit: typo

[seldondev]

Thu May 21 10:48:05 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-1842/4.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1842 --build=4