LB Adjustments; Run without mTCP

[jettjacobs]

Summary:

LB is adjustmented to remove dependency on mTCP

New Command Line Format: ./go.sh -F CONFIG_FILE -- -- -c CLIENT_INFO -s SERVER_INFO -f SERVER_CONFIG [-p PRINT_DELAY]

App Specific Arguments
--
  - `CLIENT_IFACE` : client IP and client port number, separated by a /
  - `SERVER_IFACE` : client IP and client port number, separated by a /
  - `SERVER_CONFIG` : backend server config file
  - `-p <print_delay>`: number of packets between each print, e.g. `-p 1` prints every packets.

ex: ./go.sh 2 -c 10.0.0.37/0 -s 11.0.0.37/1 -f server.conf

Usage:

This PR includes
Resolves issues
Breaking API changes
Internal API changes	X
Usability improvements	X
Bug fixes
New functionality
New NF/onvm_mgr args
Changes to starting NFs
Dependency updates
Web stats updates

Merging notes:

• Dependencies: None

TODO before merging :

• [X] PR is ready for review

Test Plan:

• LB successfully distributes packets with new command-line arguments
• Invalid command line inputs have been handled extensively, but further testing will be done over the upcoming days to ensure that all invalid inputs are handled
• LB has also been tested successfully when 3+ ports are open on the manager

Review:

• @twood02 Let me know if these command-line args are sufficient. Otherwise, another viable alternative would be to use the server.conf file to handle the load balancer interfaces as well.