LU-19079 nodemap: reserve cmds for gss identification

LU-19079 nodemap: reserve cmds for gss identification

Declare 2 new values in enum lcfg_command_type:
LCFG_NODEMAP_GSS_IDENTIFY	= 0x00ce065
LCFG_NODEMAP_LOOKUP_SHA		= 0x00ce066

LCFG_NODEMAP_GSS_IDENTIFY is for a new nodemap property that would be
named gss_identification. And LCFG_NODEMAP_LOOKUP_SHA is to be able to
lookup a nodemap from the sha256 of its name.

Declare a new value in enum nm_flag2_bits:
NM_FL2_GSS_IDENTIFY = 0x8

This is to store on disk the value of the future gss_identification
property.

Reserve sanity-sec test_79 for testing the gss identification feature.

Test-Parameters: trivial
Signed-off-by: Sebastien Buisson <sbuisson@ddn.com>
Change-Id: I2e2648f2eeb0956d7cb0793865b3344d1e8ed5a0
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/59514
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>