Use LC_ALL=C in openrc

export LC_ALL=C is required to avoid
'unsupported locale setting' errors then
invoking CLI commands in Ubuntu.

Closes-bug: #1390431

Change-Id: Ie980563025e9938f769ee0e16b629b8cf673d8c7
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
Merge "Use LC_ALL=C in openrc"