Remove unused authentication CLI options

These were copied from ceilometer where they are used for things like
the glance pollster. Ironic doesn't need these.

Change-Id: I93f2a2f3a5a93e9c1ef53514eece7f7ce8c5bffa
Don't use pecan to configure logging

Fixes bug #1184941

openstack.common.log gives a mechanism to configure logging and, by
default, we will set up a handler on root logger. Using pecan to also
configure a handler on the 'ironic' logger means every log message gets
logged to console twice.

It seems that the pecan logging configuration stuff is redundant with
our existing logging configuration infrastructure.

Change-Id: Iec0630b0e842e3b6a90021bf552d9b857c5a0552
Log configuration values on API startup

It's very helpful for every service to log its configuration values on
startup, so you can e.g. check typos.

Also, change the print statements in the API binary to info logs.

Change-Id: I1b4181ddc7f36149cddb2c24f514d526c403b2e0
Merge "Remove unused authentication CLI options"
Merge "Don't use pecan to configure logging"
Merge "Log configuration values on API startup"