Inconsistent Quorum Slice Handler

[adrianmross]

https://github.com/adrianmross/standalone-scp/blob/464219e350e8be047590915242ce1099d86ace6e/parser.cpp#L139-L145

If a quorum slice is defined multiple times with different definitions, there is no inconsistency handler.

Instead it does a weird thing where it still prints out, just not the quorum slice.

[zek224]

Included in parser.cpp, checks if the node_name already exists in node_to_name and if so, skips node line and quorum slice line.

        if (nodeExists(node_name, node_to_name)) {
            cout << RED << "ERROR: Node name '" << node_name << "' already exists. Skipping this node and its quorum." << RESET << endl;
            getline(input_file, quorum_str);                // skip the quorum line
            getline(input_file, node_name);                 // read the blank line
            continue;                                       // skip the rest of the loop iteration
        }