Rename BUILD_AVRO to BUILD_CDC

Using the broader CDC name instead of AVRO for the CMake variable name
makes more sense as there are modules other than the avrorouter.

server/modules/authenticator/CDCPlainAuth/CMakeLists.txt

@@ -1,6 +1,4 @@
-if(BUILD_CDC)
-  add_library(CDCPlainAuth SHARED cdc_plain_auth.c)
-  target_link_libraries(CDCPlainAuth maxscale-common)
-  set_target_properties(CDCPlainAuth PROPERTIES VERSION "1.0.0")
-  install_module(CDCPlainAuth core)
-endif()
+add_library(CDCPlainAuth SHARED cdc_plain_auth.c)
+target_link_libraries(CDCPlainAuth maxscale-common)
+set_target_properties(CDCPlainAuth PROPERTIES VERSION "1.0.0")
+install_module(CDCPlainAuth core)

server/modules/authenticator/CMakeLists.txt

@@ -1,4 +1,7 @@
-add_subdirectory(CDCPlainAuth)
+if(BUILD_CDC)
+  add_subdirectory(CDCPlainAuth)
+endif()
+
 add_subdirectory(GSSAPI)
 add_subdirectory(HTTPAuth)
 add_subdirectory(MaxAdminAuth)
@@ -7,10 +10,3 @@ add_subdirectory(MySQLBackendAuth)
 add_subdirectory(NullAuthAllow)
 add_subdirectory(NullAuthDeny)
 
-# if(BUILD_TESTS)
-#   add_library(testprotocol SHARED testprotocol.c)
-#   set_target_properties(testprotocol PROPERTIES VERSION "1.0.0")
-#   target_link_libraries(testprotocol maxscale-common)
-#   install_module(testprotocol core)
-# endif()
-

server/modules/protocol/CMakeLists.txt

@@ -1,4 +1,4 @@
-if(BUILD_AVRO)
+if(BUILD_CDC)
   add_subdirectory(CDC)
   add_subdirectory(examples)
 endif()

server/modules/routing/CMakeLists.txt

@@ -1,4 +1,4 @@
-if(BUILD_AVRO)
+if(BUILD_CDC)
   add_subdirectory(avrorouter)
 endif()
 if(BUILD_BINLOG)