Allow broader range of HSM systems in vfs_tsmsm

Allow broader range of HSM systems in vfs_tsmsm

    Allow to specify value of DMAPI attribute returned during offline file checks, 'tsmsm: dmapi value'.
    Previously tsmsm module has supported only IBM TSM SM engine which reports file state by *existence*
    of a certain DMAPI attribute. Other HSM systems report a certain value as DMAPI request's result.
    Port from Tridge's v3-0-ctdb git tree.
(This used to be commit 1faa97d5cc51277abbc6cb5c37d31c429bea04e4)