service enhancements

[GoogleCodeExporter]

rearrange the service selection dialog -- it is becoming too cluttered

add tags to services for more flexible categorization, allow searching on tags; 
for example IPv4, routing, addressing, security, client, server, etc.

for service customization, instead of using various tabs, allow 
files/dirs/commands to be added to a stack/tree

add service dependency packages and/or binary checks to inform users when 
required deb/rpm/etc is not installed

extend services to specify certain options that change the behavior of 
auto-generated config output
examples:
- OSPF fast convergence
- SSH root login
- DHCP address pool
- apache web root

copy service selections between nodes (e.g. "apply to multiple" button)

Original issue reported on code.google.com by ahrenh...@gmail.com on 23 Aug 2013 at 5:51

[GoogleCodeExporter]

regarding dependency/package checks -- a good assessment:

CORE provides "no useful feedback when you try to use a function that relies on 
an external tool that is not installed." [1]

[1] http://www.finmars.co.uk/blog/6-common-open-research-emulator-core

Original comment by ahrenh...@gmail.com on 22 Aug 2014 at 3:04

[GoogleCodeExporter]

Original comment by ahrenh...@gmail.com on 22 Aug 2014 at 3:04

• Added labels: Priority-High
• Removed labels: Priority-Medium