Merge pull request #8510 from sergevanginderachter/inventorydir_yacc

InventoryDir: fixing yet another corner case
Merge pull request #8515 from mpeters/ec2_group_state_doc_fix

Small doc addition to ec2_group to show the various values for "state"
Fix for #8344
Merge pull request #8518 from awasilyev/devel

Fix for #8344
Merge pull request #8449 from emonty/feature/openstack-auth-handling

Handle auth arguments across openstack modules consistently
Merge branch 'nova-compute-enhancements' of git://github.com/emonty/ansible into devel

Conflicts:
	lib/ansible/module_utils/openstack.py
	library/cloud/nova_compute
Update openstack module parameters to read 1.8 for version_added on new attributes.
Merge pull request #8446 from emonty/feature/nova-keypair-region

Pass region_name to nova_keypair
Merge pull request #8416 from willthames/ec2_handle_terminated_instances

Improved handling of already terminated instances
Merge pull request #7410 from willthames/ec2_vol_fix_error_check

Fix parameters check for ec2_vol
Merge pull request #8180 from sergevanginderachter/empty_nfs_mount_path

mount module: execute the mount only after path validation
Merge pull request #6619 from sergevanginderachter/ansible_version_var

Introduce an ansible_version dict as runner variable
Merge pull request #8516 from mpeters/ec2_dyn_inventory_include_exclude_patterns

adding include_pattern and exclude_pattern options to ec2.py
adding min() and max() filters for use in Jinja templates
Add note about rebases
Update 'version_added' in docs.
Add bigpanda module to monitoring
Update docs for bigpanda
Add some argument aliases
Rename source to source_system and remove it from the documentation.