LU-121 Fixup yaml.sh and test-framework.sh so that it only ever uses the first

LU-121 Fixup yaml.sh and test-framework.sh so that it only ever uses the first
part of the host name for log files.
This means stripping of everything off the name after and including the first .

This change is only designed to make the .yml files consistent. The log files
will append the fully qualified name and appear to do this consitantly.

We can create a jira to make the log and yml files consistant, but the reality
is that the yml files have a short life and are only used to send to Maloo.

This change will allow automated posting of results and automated testing to
begin.

1. Carries out the above using hostname -s [Thanks Andreas]
2. Adds in a quick change so that LUSTRE_BUILD in yaml.sh can be a reference to
the source rather than just the lustre version string which is recorded and
written to the yaml anyway as LUSTER_VERSION

Additionally a couple of other changes sneaked in.

1. Allows the review information to be applied to the yaml output file
by way of exporting the variable CODE_REVIEW_YAML to be a yaml description
for maloo

2. The addition of a couple of fixes to make the permissions for yaml
files be allow-all. This permissions are bracketed and so do not change any
other parts of the code.

Change-Id: Ied9a2117cd1b68e048bbc2bf1bffe782485c6150
Signed-off-by: Chris Gearing <chris@whamcloud.com>
Reviewed-on: http://review.whamcloud.com/312
Tested-by: Hudson
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Yu Jian <yujian@whamcloud.com>