removed unused stemcell assets

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
removed KLogPath rsyslog configuration since imklog module cannot be loaded

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
allow agent on centos to receive auth logs

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>