Restriction in ESME creation / updating time: routing-address, ton and npi must be the same in the cluster

[vetss]

When we are creation or updating ESME then we need to check that:
routing-adress,ton and npi must be same for all ESMEs in the cluster (when we are adding 2-nd, 3-d, etc ESME in the cluster).

Issue for a manual for it: #46

See also the issue: #143 (to do all together)

[vetss]

This is an issue for smpp-extensions projects, I have created there a copy of the issye:
RestComm/smpp-extensions#4