[WIP][GRAPHX] Allow to turn off the normalization applied in the end of static PageRank utilities

[ebonnal]

What changes were proposed in this pull request?

Overload methods PageRank.runWithOptions and PageRank.runWithOptionsWithPreviousPageRank (not to break any user-facing signature) with a normalized parameter that describes "whether or not to normalize the rank sum".

Why are the changes needed?

https://issues.apache.org/jira/browse/SPARK-

When dealing with a non negligible proportion of sinks in a graph, algorithm based on incremental update of ranks can get a precision gain for free if they are allowed to manipulate non normalized ranks.

Does this PR introduce any user-facing change?

No

How was this patch tested?

By adding a unit test that verifies that (even when dealing with a graph containing a sink) we end up with the same result for both these scenarios:
a)

• Run 6 iterations of pagerank in a row using PageRank.runWithOptions with normalization enabled

b)

• Run 2 iterations using PageRank.runWithOptions with normalization disabled
• Resume from the preRankGraph1 and run 2 more iterations using PageRank.runWithOptionsWithPreviousPageRank with normalization disabled
• Finally resume from the preRankGraph2 and run 2 more iterations using PageRank.runWithOptionsWithPreviousPageRank with normalization enabled

[AmplabJenkins]

Can one of the admins verify this patch?

[ebonnal]

replaced by #32485