Description of problem:

From the shell:

/tmp/empty $ LANG=en_US sudo yum localinstall *.rpm ; echo '$?='$?
Loaded plugins: fastestmirror
Setting up Local Package Process
Cannot open: *.rpm. Skipping.
Nothing to do
$?=0
/tmp/empty $

yum localinstall returns 0 code if there is 'Nothing to do'. However this is error state in my opinion, for example ls has exactly same opinion:

/tmp/empty $ LANG=en_US ls *.rpm ; echo '$?='$?
ls: cannot access *.rpm: No such file or directory
$?=2
/tmp/empty $

Expected result:
Non-zero return code for this use case