Merge branch '6468-docs-and-harmonize' into 'master'

packages2install - fix rename getSecurityCount

See merge request !141

check_packages2install

@@ -238,7 +238,7 @@ else
   # generated function names - package manager is prefix
   function2install="${pkgmanager}.getPackageList"
   _functionExists "${pkgmanager}.getStatusLine"    && functionStatus="${pkgmanager}.getStatusLine"
-  _functionExists "${pkgmanager}.getCriticalList"  && functionSecuritycount="${pkgmanager}.getSecurityCount"
+  _functionExists "${pkgmanager}.getSecurityCount"  && functionSecuritycount="${pkgmanager}.getSecurityCount"
 
   # count of packages ... to install ... critical (centos only)
   typeset -i iPkg2Update=0