[Fuego] ANNOUNCE: Fuego Release v1.5.8

Hello everyone,

I hereby announce the release of Fuego version 1.5.8.

Due to a recent change in the set of Debian files available from the
Jenkins download server, the Fuego docker container build broke.
Basically, the Jenkins server no longer provides the Debian package file
for the 2.164.2 version of Jenkins that Fuego has used for several
years.

In order to fix this, I have upgraded Fuego to use Jenkins version
2.149.3, and changed the Fuego version to 1.5.8 to reflect this
jump.

I am still in the process of working on the 1.6 release, although
for the last year or so I have been putting bugfixes and features
into the master repository.  So any recent installs of Fuego have
included new, yet-to-be-announced features.  These new features
have also been available using a simple 'git pull' in the fuego-core
repository on your host where Fuego is installed.

There are some features intended for the 1.6 release that are
half-baked, but don't interfere with using Fuego for normal work.
All new features will be announced and documented when 1.6
is announced.

REQUEST:  Please test the release and let me know if anything
in your Fuego workflow has broken.  I don't use install-debian.sh,
and haven't tested it.  If you use this, please give it a test.  Thanks.

The release can be found in the master branches of the fuego and
fuego-core repositories on bitbucket, for the fuegotest account. 

The v1.5.8 release is available with:
 $ git clone https://bitbucket.org/fuegotest/fuego.git

Regards, 
 -- Tim