The scripts
tools/ironic/scripts/cleanup-node.sh
tools/ironic/scripts/create-node.sh
tools/ironic/scripts/setup-network.sh
are executed by sudo and the PS4 value disappears during sudo. Add a
PS4 value so that we get better logs during their execution.
PS4 is used to prefix the tracing output when using:
'set -x' or 'set -o xtrace'
From the bash manpage:
PS4 The value of this parameter is expanded as with PS1 and the
value is printed before each command bash displays during an
execution trace. The first character of PS4 is replicated
multiple times, as necessary, to indicate multiple levels of
indirection. The default is ``+ ''.
Change-Id: If06f079bed16d9c84569594aa64259bf06f91a1e
a78097bf3f