Bug 1286632

Description of problem:
When editing fence agents, options displayed should be specific to that agent, it was quite confusing to see 'SSH Port' when adding 'apc_snmp'. If you haven't done this before, it takes time looking through the engine.log to ensure syntax is being parsed correctly. I think it'd be a nice easy improvement for users. 

Version-Release number of selected component (if applicable):
All versions, this is an RFE

How reproducible:
Always

Steps to Reproduce:
1. Add a fencing agent to a host
2. Select apc_snmp
3. *Note* That snmp does not require SSH and should be renamed to SNMP port. 

Actual results: 
Available options for fence_snmp are

Address:
User Name: 
Password:
Type:
SSH Port: 
Options:


Expected results:

Have mandatory fence agent specific options, these can be found in the fence_script on the host. 

fence_apc_snmp --help
Usage:
	fence_apc_snmp [options]
Options:
   -a, --ip=[ip]                  IP address or hostname of fencing device
   -l, --username=[name]          Login name
   -p, --password=[password]      Login password or passphrase
   -n, --plug=[id]                Physical plug number on device, UUID or
                                        identification of machine
   -d, --snmp-version=[version]   Specifies SNMP version to use
   -c, --community=[community]    Set the community string
   -u, --ipport=[port]            TCP/UDP port to use (default 161)
   -4, --inet4-only               Forces agent to use IPv4 addresses only
   -6, --inet6-only               Forces agent to use IPv6 addresses only
   -S, --password-script=[script] Script to run to retrieve password
   -b, --snmp-auth-prot=[prot]    Set authentication protocol (MD5|SHA)
   -E, --snmp-sec-level=[level]   Set security level
                                  (noAuthNoPriv|authNoPriv|authPriv)
   -B, --snmp-priv-prot=[prot]    Set privacy protocol (DES|AES)
   -P, --snmp-priv-passwd=[pass]  Set privacy protocol password
   -R, --snmp-priv-passwd-script  Script to run to retrieve privacy password
   -o, --action=[action]          Action: status, reboot (default), off or on
   -v, --verbose                  Verbose mode
   -D, --debug-file=[debugfile]   Debugging to output file
   -V, --version                  Output version information and exit
   -h, --help                     Display this help and exit
   -C, --separator=[char]         Separator for CSV created by 'list' operation
   --power-timeout=[seconds]      Test X seconds for status change after ON/OFF
   --shell-timeout=[seconds]      Wait X seconds for cmd prompt after issuing command
   --login-timeout=[seconds]      Wait X seconds for cmd prompt after login
   --power-wait=[seconds]         Wait X seconds after issuing ON/OFF
   --delay=[seconds]              Wait X seconds before fencing is started
   --retry-on=[attempts]          Count of attempts to retry power on



Additional info:

Note this is not specific to just fence_apc other fence agents as well.