* Issue #39860: Add 'not_contains' method to parsing.py
* Issue #30860 Adds self.negate to Conditional class in lib/ansible/module_utils/network/common/parsing.py
* Issue #39860 Fix singleton-comparison issue per sanity tests
* Issue #39860 'test/integration/targets/nxos_command/tests/cli/not_comparison_operator.yaml' integration test
* Issue #39860 Add unit tests to '../../test/units/module_utils/network/common/test_parsing.py'
* Issue #39860 Fix singleton comparison issue
* Fix E302 expected 2 blank lines, found 1
* Issue #39860 Add license header to unit tests
* Issue #39860 Move integration test to 'test/integration/targets/nxos_command/tests/common/'; remove unnecessary comment from unit test
* Issue #39860 remove unnecessary comment from unit test
* WIP adds network subnetting functions
* adds functions to convert between netmask and masklen
* adds functions to verify netmask and masklen
* adds function to dtermine network and subnet from address / mask pair
* network_common: add a function to get the first 48 bits in a IPv6 address.
ec2_group: only use network bits of a CIDR.
* Add tests for CIDRs with host bits set.
* ec2_group: add warning if CIDR isn't the networking address.
* Fix pep8.
* Improve wording.
* fix import for network utils
* Update tests to use pytest instead of unittest
* add test for to_ipv6_network()
* Fix PEP8
* Refactor common network shared and platform specific code into package (part-1)
As per proposal #76 refactor common network shared and platform specific
code into sub-package.
https://github.com/ansible/proposals/issues/76
* ansible.module_utils.network.common - command shared functions
* ansible.module_utils.network.{{ platform }} - where platform is platform specific shared functions
* Fix review comments
* Fix review comments
