LU-3072 test: add more operations to racer

Add chown, chmod, truncate, delxattr, getxattr, setxattr, and mknod to
racer. In lustre/utils/truncate.c print errors to stderr. Add a
default definition for MCREATE to init_test_env() in test-framework.sh
and remove definitions of MCREATE in various tests.

Test-Parameters: testlist=racer
Test-Parameters: testlist=racer
Test-Parameters: testlist=racer
Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: Ic366ac8e397035cd68cee5ebeda8408252a2c388
Reviewed-on: http://review.whamcloud.com/5936
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>