Restored rpm-build package installation for suse build hosts

And alphabetized the packages in that group.
It was a small portion so didn't want two commits: one for alpha, one for fix.

Ticket: ENT-12451
Changelog: none
(cherry picked from commit ad0ede9)

ci/cfengine-build-host-setup.cf

@@ -136,10 +136,11 @@ bundle agent cfengine_build_host_setup
 
     suse|opensuse|sles::
       "binutils";
+      "gdb";
       "pam";
-      "pkg-config";
       "patch";
-      "gdb";
+      "pkg-config";
+      "rpm-build";
 
     suse_12|opensuse_12|sles_12::
       "java-11-openjdk";