Configurable Tcp settings to CosmosClientOptions

[ausfeldt]

public class ComsosClientOptions
{
   ...
  public Nullable<TimeSpan> IdleTcpConnectionTimeout { get; set; }
  public Nullable<int> MaxRequestsPerTcpConnection { get; set; }      
  public Nullable<int> MaxTcpConnectionsPerEndpoint { get; set; }
  public Nullable<TimeSpan> OpenTcpConnectionTimeout { get; set; } 
   ...
}

[kirankumarkolli]

Model them as overloads to UseConnectionModeDirect method.

[kirankumarkolli]

Please resovle the conflicts.

[kirankumarkolli]

It needs to be reworked with the new fluent pattern under discussion.

[kirankumarkolli]

Missing contract update & change log comments.

[kirankumarkolli]

Missing change-log, contract refresh, conflicts.

[ausfeldt]

#708