Disable zfs_send_007_pos
Test case zfs_send_007_pos regularly is killed
by test-runner during zfs-tests on buildbot. Disable
it for now until further investigation can be done.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6422