AME-3614, CR-3700: Added validation support to the scripting framework

git-svn-id: https://svn.forgerock.org/openam/trunk@9183 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
Reverting revision 9183

git-svn-id: https://svn.forgerock.org/openam/trunk@9184 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d