LU-3196 tests: several test fixes about DNE tests

1. add error message in sanity test_27c.

2. In DNE, obdfilter.*.last_id will show last_id with different seqs
	0x100000000:33
	0x200000400:33
so we need check both last_id and seq here. And also on the OFD we
should show the real IDIF seq, instead of 0.

3. skip 130 now, if OSTCOUNT > 10.

4. conf-sanity 66 should use "start mdt 1" to start a single MDT,
instead of all MDTs, which will cause replace_nids failed.

5. add all MDTs in conf-sanity 72.

6. skip sanity-hsm for DNE.

Signed-off-by: wang di <di.wang@intel.com>
Change-Id: I6e88cd21c24e363680d02ef4765416f696a434cd
Reviewed-on: http://review.whamcloud.com/6106
Tested-by: Hudson
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>