balancer: update sge tests for latest parser changes

The parser now uses 'qstat -f -r -xml' which produces more detailed
output than before including details about each SGE queue. Updated the
SGE load balancer test templates to match the expected output from
'qstat -f -r -xml'.

The total slot count and slots per host counts now come from qstat
rather than qhost given that slots are queue-specific and are not 1-1
with # of cpus on an exec host. Moved the assertions around total slot
count and slots per host into the qstat tests.