Update Storage.py to 0.3.0

[axsaucedo]

This PR only updates the code in our library, but doesn't update the kfserivng image for our storage.py (that is a separate PR).

[seldondev]

Mon May 18 17:07:37 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-1846/1.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1846 --build=1

[seldondev]

Mon May 18 17:08:57 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-1846/2.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1846 --build=2

[seldondev]

Mon May 18 18:05:00 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-1846/3.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1846 --build=3

[seldondev]

Mon May 18 18:05:08 UTC 2020
The logs for [lint] [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-1846/4.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1846 --build=4

[seldondev]

Tue May 19 09:19:47 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-1846/5.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1846 --build=5

[seldondev]

Tue May 19 09:21:48 UTC 2020
The logs for [lint] [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-1846/6.log

impatient try
jx get build logs SeldonIO/seldon-core/PR-1846 --build=6

[adriangonz]

/approve

Looks good!

[seldondev]

[APPROVALNOTIFIER] This PR is APPROVED

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