Ensure password field is valid yaml
Ensure password field is valid yaml

Adding double quotes around the password field handles the problem when
password is something like !h2hboJC8p

Change-Id: Ic62f3c0ed46ca9142b7f6e869fd54dcb206626e4

sapcc/monasca-agent,sapcc/monasca-agent,sapcc/monasca-agent