Don't require IP address information for a node in order to be able to delete/cleanup/update.
This is done by stashing the hexified admin_ip address the first time around, and refering to it from there ever since
This helps resolve a kinda race condition when nodes are deleted, and thier IP addresses are deallocated.
make sure to clean up the saved boot_ip_hex value on reset, in case it changes when the node comes up again
fix typo - node <> mnode
Merge pull request #92 from aabes/pull-req-release-fred-master-ac9ce41ea52bc3bdbcec54ca4a3a5418f758d52c

Merged by devtool for aabes