Log configuration values on API startup
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

fabian4/ceilometer,Juniper/ceilometer,ityaptin/ceilometer,sileht/aodh,ityaptin/ceilometer,froyobin/ceilometer,chungg/aodh,pkilambi/ceilometer,cernops/ceilometer,chungg/aodh,openstack/aodh,mathslinux/ceilometer,luogangyi/Ceilometer-oVirt,MisterPup/Ceilometer-Juno-Extension,luogangyi/Ceilometer-oVirt,redhat-openstack/ceilometer,Juniper/ceilometer,cernops/ceilometer,maestro-hybrid-cloud/ceilometer,isyippee/ceilometer,sileht/aodh,openstack/ceilometer,idegtiarov/ceilometer,m1093782566/openstack_org_ceilometer,rickerc/ceilometer_audit,redhat-openstack/ceilometer,froyobin/ceilometer,maestro-hybrid-cloud/ceilometer,rackerlabs/instrumented-ceilometer,NeCTAR-RC/ceilometer,openstack/aodh,r-mibu/ceilometer,rackerlabs/instrumented-ceilometer,mathslinux/ceilometer,pczerkas/aodh,pczerkas/aodh,tanglei528/ceilometer,idegtiarov/ceilometer,citrix-openstack-build/ceilometer,m1093782566/openstack_org_ceilometer,citrix-openstack-build/ceilometer,citrix-openstack-build/ceilometer,JioCloud/ceilometer,isyippee/ceilometer,rickerc/ceilometer_audit,JioCloud/ceilometer,fabian4/ceilometer,r-mibu/ceilometer,MisterPup/Ceilometer-Juno-Extension,tanglei528/ceilometer,JioCloud/ceilometer,openstack/ceilometer,NeCTAR-RC/ceilometer,rickerc/ceilometer_audit,rackerlabs/instrumented-ceilometer,tanglei528/ceilometer,eayunstack/ceilometer,pkilambi/ceilometer,eayunstack/ceilometer,NeCTAR-RC/ceilometer