Remove havana compat from nova.console.rpcapi

Since we only support upgrading from N-1 to N, there's no
need to keep around this older upgrade related code.

Change-Id: I663b77230cb0ca87c31a4dfd6cddaf10c588a000
Replacement `_` on `_LI` in all LOG.info - part 1

oslo.i18n uses different marker functions to separate the
translatable messages into different catalogs, which the translation
teams can prioritize translating. For details, please refer to:
http://docs.openstack.org/developer/oslo.i18n/guidelines.html#guidelines-for-use-in-openstack

There were not marker fuctions some places in directory network.
This commit makes changes:
* Add missing marker functions
* Use ',' instead of '%' while adding variables to log messages

Added a hacking rule for the log info about checking
translation for it.

Change-Id: I96766d723b01082339876ed94bbaa77783322b8c
compute: rename hvtype.py to hv_type.py

For consistency with vm_mode.py, rename the hvtype.py module
to hv_type.py

Change-Id: I70bb6dea0e14ed0904d8d21b41b93b47bf0deb09
Merge "Remove havana compat from nova.console.rpcapi"
Merge "Replacement `_` on `_LI` in all LOG.info - part 1"
Merge "compute: rename hvtype.py to hv_type.py"