For example, if bootparams.addkcmdline for the node is "test1+=NEXTRECORD" and bootparams.addkcmdline for the group it is in is "test2", the returned values from nodels for bootparams.addkcmdline will be "test1 test2".
Not that this stops after it finds a single occurance of a value for this attriute without the "+=NEXTRECORD". If all values from the groups are wanted, each should have "+=NEXTRECORD" at the end of the entry.
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@6840 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
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