package_manager: fix "exlcude" vs. "exclude" typo

Which results in:

--------------------------------
0557: package_exclude = self.d.getVar('PACKAGE_EXCLUDE')
*** 0558: exclude_pkgs = (bad_recommendations.split() if bad_recommendations else []) + (package_exlcude.split() if package_exclude else [])

      0559:
      0560:        output = self._invoke_dnf((["--skip-broken"] if attempt_only else []) +
      0561:                         (["-x", ",".join(exclude_pkgs)] if len(exclude_pkgs) > 0 else []) +
      0562:                         (["--setopt=install_weak_deps=False"] if self.d.getVar('NO_RECOMMENDATIONS') == 1 else []) +

Exception: NameError: name 'package_exlcude' is not defined
ERROR: cube-builder-initramfs-1.0-r0 do_rootfs: Function failed: do_rootfs
---------------------------------

index d51609189d04..c92ed936c137 100644
@@ -555,7 +555,7 @@ class RpmPM(PackageManager):
 
         bad_recommendations = self.d.getVar('BAD_RECOMMENDATIONS')
         package_exclude = self.d.getVar('PACKAGE_EXCLUDE')
-        exclude_pkgs = (bad_recommendations.split() if bad_recommendations else []) + (package_exlcude.split() if package_exclude else [])
+        exclude_pkgs = (bad_recommendations.split() if bad_recommendations else []) + (package_exclude.split() if package_exclude else [])
 
         output = self._invoke_dnf((["--skip-broken"] if attempt_only else []) +
                          (["-x", ",".join(exclude_pkgs)] if len(exclude_pkgs) > 0 else []) +

2.7.4