docs: updates prediction to new hostname

[telpirion]

This adjusts the hostname used for prediction samples. All java-aiplatform prediction requests should use the following hostname:

us-central1-aiplatform.googleapis.com

This pull request also disables the testing issue identified for IOD ( #178 ).

[codecov]

Codecov Report

Merging #173 (d45f7ce) into master (871e976) will increase coverage by 1.01%.
The diff coverage is 77.60%.

@@             Coverage Diff              @@
##             master     #173      +/-   ##
============================================
+ Coverage     77.05%   78.06%   +1.01%     
- Complexity      707     1402     +695     
============================================
  Files            49       97      +48     
  Lines          5133    10158    +5025     
  Branches         69      137      +68     
============================================
+ Hits           3955     7930    +3975     
- Misses         1042     2051    +1009     
- Partials        136      177      +41     

Impacted Files	Coverage Δ	Complexity Δ
...orm/v1/stub/SpecialistPoolServiceStubSettings.java	84.54% <ø> (ø)	18.00 <0.00> (?)
...cloud/aiplatform/v1beta1/DatasetServiceClient.java	77.77% <ø> (+4.09%)	55.00 <0.00> (ø)
...oud/aiplatform/v1beta1/DatasetServiceSettings.java	12.72% <ø> (ø)	2.00 <0.00> (ø)
...loud/aiplatform/v1beta1/EndpointServiceClient.java	73.72% <ø> (+3.38%)	40.00 <0.00> (ø)
...ud/aiplatform/v1beta1/EndpointServiceSettings.java	14.28% <ø> (ø)	2.00 <0.00> (ø)
...gle/cloud/aiplatform/v1beta1/JobServiceClient.java	83.59% <ø> (+5.36%)	119.00 <0.00> (ø)
...e/cloud/aiplatform/v1beta1/JobServiceSettings.java	9.21% <ø> (ø)	2.00 <0.00> (ø)
...oud/aiplatform/v1beta1/MigrationServiceClient.java	67.64% <ø> (+2.94%)	15.00 <0.00> (ø)
...d/aiplatform/v1beta1/MigrationServiceSettings.java	20.58% <ø> (ø)	2.00 <0.00> (ø)
...e/cloud/aiplatform/v1beta1/ModelServiceClient.java	77.64% <ø> (+3.52%)	58.00 <0.00> (ø)
... and 173 more

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