Added addtional settings for  managed servers / admin server

Added settings for tunneling, log format for access files (such as
extended)
Note: also refined wls_server properties; Not all properties are needed;
Example:

server_instances:
'AdminServer':
    ensure:                                'present'

tunnelingenabled:                      '1'
    logfilename:
"%{hiera('wls_log_dir')}/AdminServer.log"
    log_http_filename:
"%{hiera('wls_log_dir')}/AdminServer.access"

log_datasource_filename:
"%{hiera('wls_log_dir')}/AdminServer.ds"
    log_rotationtype:
"none"
    log_http_format_type:                  "extended"

log_http_format:                       "date time x-XForwardedFor s-ip
cs-method cs-uri x-SOAPAction sc-status bytes time-taken x-UserAgent"
Merge pull request #79 from mkelderm/master

Added addtional settings for  managed servers / admin server