* Initial rhel update

* RHEL support added.

* Add tests

* quiet down test for ant/gradle/maven/groovy when they are not yet installed.

* revert README -- it is autobuilt

* Update src/java/NOTES.md

add "`" around package manager names.
Co-authored-by: Samruddhi Khandale <samruddhikhandale@github.com>

* address PR feedback

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Co-authored-by: Jeff Putsch <jputsch@analog.com>
Co-authored-by: Samruddhi Khandale <samruddhikhandale@github.com>