vic-machine reconfigure: Update the management network settings

[chengwang86]

User Statement:

As a VIC operation user, I need the ability to update the management network settings.

Details:

• supported operations:
  • update management network
  • update management-network-gateway if static ip is used
  • update management-network-ip if static ip is used (this should be updated together with management-network-gateway)
  • toggle between DHCP and static ip
• hot update:
  • no; need to restart the VCH to make the changes take effect.
• input/output data format:
  • input: --management-network mngt-1, --management-network-ip 10.0.0.2/24, --management-network-gateway 10.1.0.0/16,10.2.0.0/16:10.0.0.1
  • output: N/A
• impact on VCH/containerVMs:
  • VCH: All changes will be applied after VCH restart.
  • containerVMs: no.
• is upgrade needed:
  • no, since no VCH configuration changes.

Acceptance Criteria:

• add the ability to update the management network settings.
• add relevant test cases

[chengwang86]

If the VCH uses static IP, maybe we also need to make sure that the new management network ip range contains the current static IP; otherwise, the user needs to specify a new valid static IP that is within the new IP range.

[emlin]

Management network is the network connect to vSphere, not quite sure why user change this network configuration. But anyway, is that happens, we're able to update the configuration in VCH.

@chengwang86 Please verify after management network ip address is changed, if docker attach still work

[emlin]

Talked with @caglar10ur and @kreamyx for VCH ip change issue. The result is that we've supported VCH ip change for container attach, as long as we restarted VCH. So this function should work just fine