Change AMQP default port to non-ssl

We have gone back and forth on this a bit.  But, I believe it's shaken itself
out during testing.

When setting up AMQP to use SSL, several steps are involved including copying
ssl certs from the AMQP server over to the ManageIQ appliance.  Defaulting to
the SSL AMQP port assumes that the user is going to take these steps.  It's
better to assume non-ssl, and then include changing the default AMQP port number
part of the steps for configuring AMQP to use SSL in the appliance.

https://bugzilla.redhat.com/show_bug.cgi?id=1127954
Constantize default amqp port

https://bugzilla.redhat.com/show_bug.cgi?id=1127954
Fix default amqp port setting for qpid connection

There are two problems here:

1) the default port setting of 5671 is assuming SSL connections for AMQP
2) the def_options was actually overriding the values in the options parameter

When setting up AMQP to use SSL, several steps are involved including copying
ssl certs from the AMQP server over to the ManageIQ appliance.  Defaulting to
the SSL AMQP port assumes that the user is going to take these steps.  It's
better to assume non-ssl, and then include changing the default AMQP port number
part of the steps for configuring AMQP to use SSL in the appliance.

Secondly, the direction of the hash merge was taking the default values in
def_options and replacing anything in the options parameter.  Instead, the logic
should be to only use the default values in the def_options local variable when
there are no corresponding values provided in the options parameter.

https://bugzilla.redhat.com/show_bug.cgi?id=1127954
Fix default amqp port setting for rabbit

Two problems addressed here:

1) The default port setting for rabbit connections of 5671 assumes SSL
2) The connect method was not using the value provided by the caller

When setting up AMQP to use SSL, several steps are involved including copying
ssl certs from the AMQP server over to the ManageIQ appliance.  Defaulting to
the SSL AMQP port assumes that the user is going to take these steps.  It's
better to assume non-ssl, and then include changing the default AMQP port number
part of the steps for configuring AMQP to use SSL in the appliance.

Secondly, the connect method was simply ignoring any value for AMQP port
provided by the caller and insisting on 5671.

https://bugzilla.redhat.com/show_bug.cgi?id=1127954
Provide port for qpid connection spec

https://bugzilla.redhat.com/show_bug.cgi?id=1127954