Enhance the MultiReadHttpServletRequest stream

[vishalya]

Description

• The return values of the function isFinished should be true only no bytes are available in the input stream to read
• isReady should always return true, since the inputstream should be ready all the time and never be false.
• Added methods to so that multiple bytes can be read for better performance.

Additional context and related issues

@Chaho12 has idea on the issue with this code. @willmostly is the original author.

Release notes

(X) This is not user-visible or is docs only, and no release notes are required.
( ) Release notes are required, with the following suggested text:

[Chaho12]

Typo in commit message. MultiReadHttpServletRequest misses t there.
Btw how about "Fix ServletInputStream behavior for MultiReadHttpServletRequest and add read override" or you can remove MultiReadHttpServletRequest.

[RoeyoOgen]

do we want to make this null-safe?

[vishalya]

byteArrayInputStream is locally allocated, if that's what your concern is. It should not be null.

[mosabua]

Is this good to to @vishalya @Chaho12 @oneonestar ?

[Chaho12]

Seems ok. But don't forget to fix the commit message :)

[andythsu]

LGTM except for the commit msg

[Chaho12]

LGTM 👍

[Chaho12]

Build failed because of this issue #755

[ebyhr]

Enhance the MultiReadHttpServletRequest stream

I don't think developers can understand changes from this commit title. Please add the commit body explaining what was enhanced.

[vishalya]

Updated the PR description.

[ebyhr]

Thanks, please update the commit body too.

[mosabua]

Lets finish this off @vishalya .. add the info from the description to the commit message as discussed in team sync and then you can go ahead with merge.

[ebyhr]

@vishalya Not sure why you ignored the above comment.