Use sed to remove firewall rules instead of ed
Use sed to remove firewall rules instead of ed

Using sed allows us to pick up the NTP rule which will only be there
if the Manager is the NTP server.

Signed-off-by: Brian J. Murrell <2a8f564cbb80211e19c0a14fed38a451599c042f@intel.com>
Change-Id: I61b5390c50d3f1ad1025599285c06a2b29399525

intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre