Bump cpp-driver to v2.15.2 and libuv to 1.38.1, switch to CQL protocol v4

dependencies.mk

@@ -2,8 +2,8 @@ CASSANDRA_VERSION = 3.11.5
 MOSQUITTO_VERSION = 1.5.5
 BOOST_VERSION     = 1.70.0
 OPENSSL_VERSION   = 1.1.1c
-CPPDRV_VERSION    = 2.10.0
-LIBUV_VERSION     = 1.24.0
+CPPDRV_VERSION    = 2.15.2
+LIBUV_VERSION     = 1.38.1
 BACNET-STACK_VERSION = 0.8.6
 FREEIPMI_VERSION = 1.6.3
 GCRYPT_VERSION   = 1.8.4
@@ -36,8 +36,8 @@ DISTFILES_HASHES = apache-cassandra-3.11.5.tar.gz|9428d8cd8bf8880d6536142e4b8374
                    mosquitto-1.5.5.tar.gz|a17dffc6f63b2a4ab2eb5c51139e60e9;\
                    boost_1_70_0.tar.gz|fea771fe8176828fabf9c09242ee8c26;\
                    openssl-1.1.1c.tar.gz|15e21da6efe8aa0e0768ffd8cd37a5f6;\
-                   cpp-driver-2.10.0.tar.gz|6d15dd2cccd2efd1fdc86089d26971d0;\
-                   libuv-v1.24.0.tar.gz|90320330757253b07404d2a97f59c66b;\
+                   cpp-driver-2.15.2.tar.gz|c33f14436c79fc740879c02917fb9022;\
+                   libuv-v1.38.1.tar.gz|44e400ca3974a046b977f41e18c44142;\
                    bacnet-stack-0.8.6.tgz|544ebd42ed959deb2213209b66bbc460;\
                    libgcrypt-1.8.4.tar.gz|433ab0a47b25994fa92b165db185f174;\
                    libgpg-error-1.36.tar.gz|f2283e22959ef71f44d8be3d0987a96b;\
@@ -188,8 +188,8 @@ $(DCDBDEPSPATH)/boost_$(BOOST_VERSION_U)/.installed: $(DCDBDEPSPATH)/boost_$(BOO
 
 $(DCDBDEPSPATH)/libuv-v$(LIBUV_VERSION)/.built: $(DCDBDEPSPATH)/libuv-v$(LIBUV_VERSION)/.patched
 	@echo "Building libuv..."
-	mkdir -p $(@D)/build
-	cd $(@D)/build && \
+	mkdir -p $(@D)/lib
+	cd $(@D)/lib && \
 	CC=$(FULL_CC) CXX=$(FULL_CXX) cmake $(CMAKE_CROSS_FLAGS) \
 		-DCMAKE_INSTALL_LIBDIR=lib \
 		-DCMAKE_INSTALL_PREFIX=$(DCDBDEPLOYPATH)/ \
@@ -198,7 +198,7 @@ $(DCDBDEPSPATH)/libuv-v$(LIBUV_VERSION)/.built: $(DCDBDEPSPATH)/libuv-v$(LIBUV_V
 
 $(DCDBDEPSPATH)/libuv-v$(LIBUV_VERSION)/.installed: $(DCDBDEPSPATH)/libuv-v$(LIBUV_VERSION)/.built | $(DCDBDEPLOYPATH)
 	@echo "Installing libuv..."
-	cd $(@D)/build && make install && touch $(@)
+	cd $(@D)/lib && make install && touch $(@)
 
 $(DCDBDEPSPATH)/cpp-driver-$(CPPDRV_VERSION)/.built: $(DCDBDEPSPATH)/cpp-driver-$(CPPDRV_VERSION)/.patched $(DCDBDEPSPATH)/openssl-$(OPENSSL_VERSION)/.built $(DCDBDEPSPATH)/libuv-v$(LIBUV_VERSION)/.built
 	@echo "Building cpp-driver..."

lib/src/connection.cpp

@@ -374,8 +374,8 @@ bool ConnectionImpl::connect() {
   cass_cluster_set_core_connections_per_host(cluster, coreConnPerHost);
   cass_cluster_set_request_timeout(cluster, 60000);
 
-  /* Force protcol version to 1 */
-  cass_cluster_set_protocol_version(cluster, 1);
+  /* Force protcol version to 4 */
+  cass_cluster_set_protocol_version(cluster, 4);
 
   /* Connect to the server */
   CassError rc = CASS_OK;