Napalm-ios

- Improve hostname change handler
- Optimize get_interfaces_ip()
- Implement temperature in get_environment()
- Fix blank domain_name issue with get_facts()
- Fix get_interfaces for pseudowire

- Add telnet support
- Bug fixes on getters
- On rollback save running-config to startup-config
- Improve file system auto-detection behavior

*This is a feature release*
--------------------------

- Add `keepalive` optional argument: https://github.com/napalm-automation/napalm-ios/pull/149
- Send NULL byte when `is_alive` is invoked (to maintain the SSH connection persistent): https://github.com/napalm-automation/napalm-ios/pull/155
- Raise `ConnectionClosedException` when the connection becomes unusable - the transport layer (netmiko) raises EOFError or the socket is closed: 152 Thanks to kbirkeland
- Updated PR for get_bgp_neighbors to support IPv6: 153
- Improved implementation for `get_interfaces`: https://github.com/napalm-automation/napalm-ios/pull/157 thanks to itdependsnetworks
- Capture generic errors when doing a commit/replace: 150
- Fix lint issue with socket import: 167

https://github.com/napalm-automation/napalm-ios/milestone/15?closed=1

https://github.com/napalm-automation/napalm-ios/milestone/14?closed=1

Significant update to merge and replace operations: https://github.com/napalm-automation/napalm-ios/pull/100
Update lldp detail regex: https://github.com/napalm-automation/napalm-ios/pull/97
Improvements to get_mac_address_table: 95