Add CR line ending support to telnet

[tschorle]

SUMMARY

Add a CR line ending option to telnet

ISSUE TYPE

• Feature Idea

COMPONENT NAME

ansible.netcommon.telnet

ADDITIONAL INFORMATION

When using telnet some devices expect CR line ending, but currently only CRLF and LF are supported.
Adding an additional CR boolean, similar to the existing CRLF would increase flexibility.