Updating of management interface part after introducing of congestion control into SS7 stack

[vetss]

We need to update statistics / alarm management after introducing of SS7 congestion control.

Suggested updates: 1) SCTP alarms - adding alarms in case of SCTP connection is congested (level 1 - minor, level 2 - major, level 3 - critical)

2) TCAP stack: statistic counters:

• max count of networkID areas that are not available
• max count of networkID areas that are congested with level at least 1
• max count of networkID areas that are congested with level at least 2
• max count of networkID areas that are congested with level at least 3
• max count of Executors that are congested with level at least 1
• max count of Executors that are congested with level at least 2
• max count of Executors that are congested with level at least 3
• Memory congestion level (0-3)
• max count of TcapUserParts that are congested with level at least 1
• max count of TcapUserParts that are congested with level at least 2
• max count of TcapUserParts that are congested with level at least 3

[vetss]

Fixing by:

alarm part - https://github.com/RestComm/jss7/commit/4ae8402b6de9be0ba8904833b36c3ffd1bf8cf64 statistic part - https://github.com/RestComm/jss7/commit/581e61a481cb9d876855111e7ef0e7eab628b965