Upgrade consul-api to 1.1.6
Upgrade consul-api to 1.1.6

fixes gh-75

krmcbride/spring-cloud-consul,rkettelerij/spring-cloud-consul,spring-cloud/spring-cloud-consul,bomee/spring-cloud-consul,spring-cloud/spring-cloud-consul,jmnarloch/spring-cloud-consul,bomee/spring-cloud-consul,jmnarloch/spring-cloud-consul,bomee/spring-cloud-consul,toast2e/spring-cloud-consul,rkettelerij/spring-cloud-consul,bpgray/spring-cloud-consul,spring-cloud/spring-cloud-consul,bpgray/spring-cloud-consul,jeffmaury/spring-cloud-consul,toast2e/spring-cloud-consul,rkettelerij/spring-cloud-consul,bpgray/spring-cloud-consul,jeffmaury/spring-cloud-consul,toast2e/spring-cloud-consul,krmcbride/spring-cloud-consul,jmnarloch/spring-cloud-consul,jeffmaury/spring-cloud-consul,krmcbride/spring-cloud-consul