SUBMARINE-1355. Remove seldon graph storage initializerimage dependence

[cdmikechen]

What is this PR for?

The installation of seldon-core by helm will specify the storageInitializer image and version by default, so we do not need to hard code this.

What type of PR is it?

Improvement

Todos

• [x] - Remove seldonio rclone-storage-initializer image hard code
• [x] - Add serve test case to codecov

What is the Jira issue?

https://issues.apache.org/jira/browse/SUBMARINE-1355

How should this be tested?

NA

Screenshots (if appropriate)

NA

Questions:

• Do the license files need updating? No
• Are there breaking changes for older versions? No
• Does this need new documentation? No

[codecov[bot]]

Codecov Report

Merging #1023 (a68345a) into master (21bd268) will increase coverage by 0.10%. The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #1023      +/-   ##
============================================
+ Coverage     25.48%   25.58%   +0.10%     
- Complexity     1079     1080       +1     
============================================
  Files           358      365       +7     
  Lines         29089    29134      +45     
  Branches       3479     3479              
============================================
+ Hits           7412     7455      +43     
- Misses        21461    21464       +3     
+ Partials        216      215       -1     

Flag	Coverage Δ
python-integration	59.70% <ø> (+0.11%)	:arrow_up:
python-unit	52.57% <ø> (+0.38%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...org/apache/submarine/serve/seldon/SeldonGraph.java	100.00% <ø> (ø)
.../apache/submarine/serve/utils/SeldonConstants.java	0.00% <ø> (ø)
...e/submarine/serve/seldon/PredictorAnnotations.java	100.00% <100.00%> (ø)
...ine-sdk/pysubmarine/submarine/tracking/__init__.py	100.00% <0.00%> (ø)
...ne-sdk/pysubmarine/submarine/artifacts/__init__.py	100.00% <0.00%> (ø)
...marine-sdk/pysubmarine/submarine/utils/__init__.py	78.57% <0.00%> (ø)
submarine-sdk/pysubmarine/submarine/exceptions.py	100.00% <0.00%> (ø)
submarine-sdk/pysubmarine/submarine/__init__.py	100.00% <0.00%> (ø)
...marine-sdk/pysubmarine/submarine/store/__init__.py	100.00% <0.00%> (ø)
...ubmarine/submarine/ml/tensorflow/model/__init__.py	100.00% <0.00%> (ø)
... and 1 more

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