Configure boto.cfg in tempest to point to SSL bundle

The boto client uses the ca_certificate_files value in the
Boto section of /etc/boto.cfg when making an SSL client
connection. Configure that to be the devstack SSL CA bundle
so the boto tests will pass when running against an SSL or
TLS-proxy configured devstack environment.

Change-Id: I55ae6d6e0c5b3adb4370ec93f40ae1cd47741457
Fix path to network interfaces configurations

This commit changes the path that is used as reference in the
documentation to one that is widely used in both ubuntu and debian. This
was made in order to avoid confusions (that actually happened while I
was trying out the devstack guide).

Change-Id: Ic3ce40816f79f9f522fc33ed8b4a574d7a57d586
Fixes lib/tempest to accomodate Storage Protocol name with spaces

Change-Id: Ic711b2bb69f78b10ff6cb48e670df2d35646d8e9
Closes-Bug: #1278835
Merge "Configure boto.cfg in tempest to point to SSL bundle"
Merge "Fixes lib/tempest to accomodate Storage Protocol name with spaces"
Merge "Fix path to network interfaces configurations"