dockerfiles: centos 7: disable Kafka

Signed-off-by: Eduardo Silva <[email protected]>

Author: edsiper

dockerfiles/Dockerfile.centos7

@@ -32,7 +32,7 @@ RUN cmake -DCMAKE_INSTALL_PREFIX=/opt/fluent-bit/ -DCMAKE_INSTALL_SYSCONFDIR=/et
     -DFLB_RELEASE=On -DFLB_TRACE=On \
     -DFLB_TESTS_INTERNAL=On -DFLB_TESTS_RUNTIME=On \
     -DFLB_SQLDB=On -DFLB_HTTP_SERVER=On \
-    -DFLB_OUT_KAFKA=On \
+    -DFLB_KAFKA=off \
     -DFLB_JEMALLOC=On \
     -DFLB_CHUNK_TRACE=On \
     -DFLB_OUT_PGSQL=On \