Descr to name

These changes are to replace the use of ifDescr as our primary index with ifName. On JunOS the two are identical. On the ALU ifDescr required the result to be parsed with custom code. The end result of our custom code is available in ifName so by switching we can eliminate much of the ALU-specific code.
This looks like a typo, 'hsots' rather than 'hosts'?    Also, what is the intention of this config option?