Adding a pom file to serve as extensions parent

git-svn-id: https://svn.forgerock.org/openam@3997 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d
Adding a pom file to serve as extensions parent

git-svn-id: https://svn.forgerock.org/openam@3998 0f4defcf-c51a-4c67-9f44-6fb5eba73c5d