* - Netconf plugin addition for iosxr
- Utilities refactoring to support netconf and cliconf
- iosx_banner refactoring for netconf and cliconf
- Integration testcases changes to accomodate above changes
* Fix sanity failures, shippable errors and review comments
* fix pep8 issue
* changes run_command method to send specific command args
* - Review comment fixes
- iosxr_command changes to remove ComplexDict based command_spec
* - Move namespaces removal method from utils to netconf plugin
* Minor refactoring in utils and change in deprecation message
* rewrite build_xml logic and import changes for new utils dir structure
* - Review comment changes and minor changes to documentation
* * refactor common code and docs updates
* move set_module_args to units.modules.utils
* unit tests: reuse set_module_args
* unit tests: mock exit/fail_json in module.utils.ModuleTestCase
* unit tests: use module.utils.ModuleTestCase
* unit tests: fix 'import shadowed by loop variable'
* updates all iosxr modules to support persistent socket
* adds iosxr action plugin to connect to device
* adds exec_command() to iosxr shared module
* fixes iosxr_config and iosxr_template local action
* update all unit test cases
* adds base test module for iosxr module testing
