Low: use bash in rgmanager/src/netfs.sh rather than clunky sed/grep/cut

[grooverdan]

since bash can do find and replace, regex matches and variable extraction lets use it.

[grooverdan]

$ set -o posix
$ a='proto=x=y'
$ b='#proto=x=y'
$ [ ${a%%=*} == proto ] && echo yes
yes
$ [ ${b%%=*} == proto ] && echo yes
$ 

[grooverdan]

this is also bash in first line for netfs