NIFI-10887: Addressed performance concerned. Use String.indexOf() ins…

[markap14]

…tead of Pattern.matcher() when using Literal Replace. Use a NonFlushableOutputStream when ProcessSession.write() is called. Implemented hashCode() on AbstractConnection. Updated default Run Schedule on ReplaceText from 0 ms to 25 ms. Added a Surround Replacement strategy that allows both prepending and appending text. Updated unit tests to account for this.

Summary

NIFI-00000

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[mattyb149]

Reviewing...

[mattyb149]

+1 LGTM, verified the expected behavior and noted the performance improvements. Thanks! merging to main