Fix debug message when waiting for reconfiguration.
Fix debug message when waiting for reconfiguration.

We were logging the change instead of the build in the debug
log messages while waiting for reconfiguration.

Change-Id: Ib0976901e3c55f78cc7f2d59612f1a0632a17e93

bhuvan/zuul,wikimedia/integration-zuul,gooddata/zuul,devdattakulkarni/zuul_messaging,wikimedia/integration-zuul,wikimedia/integration-zuul,gooddata/zuul,wikimedia/integration-zuul,gooddata/zuul,devdattakulkarni/zuul_messaging,gooddata/zuul,gooddata/zuul,devdattakulkarni/zuul_messaging