[rancid] Support for Dell EqualLogic PS-Series Storages in RANCID

[Frank Fegert]

Hello all,

i'd like to propose to add support for Dell EqualLogic PS-Series
storage arrays to RANCID. I've described the necessary extensions
and changes here:
  http://www.bityard.org/blog/2016/12/13/dell_equallogic_ps-series_rancid

and there is a Git branch containing the changes available here:
  https://github.com/frank-fegert/rancid/tree/equallogic

Besides some minor changes to the build system and documentation,
the only major additions are "bin/eqllogin(.in)" and "lib/equal-
logic.pm(.in)".

The extensions have been successfully tested against the following
Dell EqualLogic PS-Series models:
  Dell EqualLogic PS-M4110
  Dell EqualLogic PS-4210
  Dell EqualLogic PS-6210

and have been in production use for over a month now.

Can you please consider the provided extensions for inclusion in
the next rancid release?

Thanks & best regards,

    Frank Fegert