build_rpm: print out nevra rather than just name

It's more precise and makes it possible to find out if e.g. pkg
upgrades made it to the tree.

Closes: #859
Approved by: cgwalters

tests/common/libtest.sh

@@ -407,7 +407,7 @@ BuildArch: $arch
 
 # by default, we create a /usr/bin/$name script which just outputs $name
 %build
-echo -e "#!/bin/sh\necho $name" > $name
+echo -e "#!/bin/sh\necho $name-$version-$release.$arch" > $name
 chmod a+x $name
 $build
 

tests/vmcheck/test-layering-basic.sh

@@ -66,7 +66,7 @@ vm_assert_layered_pkg foo-1.0 present
 echo "ok pkg foo added"
 
 output=$(vm_cmd /usr/bin/foo)
-if [[ $output != foo ]]; then
+if [[ $output != foo-1.0-1.x86_64 ]]; then
   assert_not_reached "foo printed wrong output"
 fi
 echo "ok correct output"