Converting the argument list to a string with ' '.join causes
the shell interpreter to misparse spaces in property values.
Since the zfs command does not need shell anywhere, using
a list instead of a string works just as well with run_command.
Fixes#3545.
Current property parser breaks when values contain spaces. Since
zfs get -H returns tab separated lines, it is better to explicitly
split on tabs than on whitespace.
Migrated all examples: in DOCUMENTATION=''' string to standalone EXAMPLES=''' string
Added deprecation warning to moduledev.rst and remove deprecated example from it
Fixed up a few typos and uppercased some acronyms.
add consistency to how EXAMPLES are formatted
