v5.0.x: Update VERSION greek to rc2.

bot:notacherrypick

Signed-off-by: Austen Lauria <awlauria@us.ibm.com>

Author: awlauria

VERSION

@@ -26,7 +26,7 @@ release=0
 # requirement is that it must be entirely printable ASCII characters
 # and have no white space.
 
-greek=rc1
+greek=rc2
 
 # If repo_rev is empty, then the repository version number will be
 # obtained during "make dist" via the "git describe --tags --always"