* Extend git commit c65909d6db "Add network fact to obtain FC WWN initiator ports"
adding support of enumerating AIX device WWN ports
$ lsdev -Cc adapter -l fcs*
fcs0 Defined 00-00 8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
fcs1 Defined 00-01 8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
fcs2 Available 04-00 8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
fcs3 Available 04-01 8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
$ lscfg -vpl fcs3 | grep 'Network Address'
Network Address.............10000090FA551509
* no self in this code
* Two fixes:
- fix run_command execution, passing 'use_unsafe_shell=True' since we have a pipe in it ( | grep )
if we don't set unsafe shell, it will return error on execution.
- strip new line characters at the end of WWNs.
* fix pep8 , E225 missing whitespace around operator
* use module.get_bin_path() instead of hardcoded values
* move module.get_bin_path() out of for loop
* use python string parsing instead of calling external grep
* use in operator instead of find() for simplicity and readability
* add changelog fragment
