Improve $count in $filter collection properties

[KenitoInc]

Description

Currently ODL supports
$filter=navProp/$count gt 2
$filter=collectionProp/$count gt 2

It doesn't support $filter and $search within $count.
Spec: http://docs.oasis-open.org/odata/odata/v4.01/cs01/part1-protocol/odata-v4.01-cs01-part1-protocol.html#sec_RequestingtheNumberofItemsinaCollect

This PR add support for the following:

$filter=navProp/$count($filter=prop gt 1) gt 2
$filter=navProp/$count($search=prop) eq 'abc'

$filter=collectionProp/$count($filter=prop gt 1) gt 2
$filter=collectionProp/$count($search=prop) eq 'abc'

Checklist (Uncheck if it is not completed)

• Test cases added
• Build and test with one-click build and test script passed

Additional work necessary

If documentation update is needed, please add "Docs Needed" label to the issue and provide details about the required document change in the issue.

[xuzhg]

[mikepizzo]

🕐

[mikepizzo]

ReadQueryOption

if this is the same logic as in selectexpand, is there some common place we could put it (maybe a static method in UriParserHelper that takes a lexer and returns the string?)

[mikepizzo]

[mikepizzo]

I like the new factoring much better -- thanks. A few minor suggestions, but looks good to me.

[pull-request-quantifier-deprecated]

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Total files changed: 18

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.cs : +228 -23
.txt : +3 -0

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