Change neutron mysql default charset to utf8

Changed the default charset to utf8 and the
collation to utf8_unicode_ci.

Change-Id: I94231c7e8ac2d93efddbd555dc549f74db70931b
add https support options to metadata agent

This two new parameters for metadata agent:
* auth_insecure: turn off verification of the certificate for ssl, or
* auth_ca_cert: CA cert to check against with for ssl.
The two options where recently introduced with:
https://review.openstack.org/#/c/67181/

Change-Id: Ia05a1ec6b959f6b95e2e77350199bd6129c29271
Fix to remove conflicted symlink

Since cisco plugin coexists with ovs, a symlink
pointing to ovs already exists causing a conflict
with cisco_plugins.ini. This fix should default
the symlink to ovs.

Change-Id: I98c7b2e08257a6d9c07916b9b114bcb21d913e4f
Merge "Change neutron mysql default charset to utf8"
Merge "add https support options to metadata agent"