Increase sleeps for TAP tests reconfiguring ProxySQL interfaces

Sleeps have been increased for tests 'test_clickhouse_server-t' and
'test_sqlite3_server-t' in order to prevent potentials 'EADDRINUSE',
that could lead to client stalls when connecting to the interfaces.

test/tap/tests/test_clickhouse_server-t.cpp

@@ -497,7 +497,8 @@ int main(int argc, char** argv) {
 		// NOTE: Wait for ProxySQL to reconfigure, changing Clickhous interface.
 		// Trying to perform a connection immediately after changing the
 		// interface could lead to 'EADDRINUSE' in ProxySQL side.
-		sleep(1);
+		// UPDATE: Timeout increased to '5' seconds to avoid previously described issue.
+		sleep(5);
 
 		// Connect to the new interface
 		std::pair<std::string, int> new_host_port {};

test/tap/tests/test_sqlite3_server-t.cpp

@@ -348,7 +348,8 @@ int main(int argc, char** argv) {
 		// NOTE: Wait for ProxySQL to reconfigure, changing SQLite3 interface.
 		// Trying to perform a connection immediately after changing the
 		// interface could lead to 'EADDRINUSE' in ProxySQL side.
-		sleep(1);
+		// UPDATE: Timeout increased to '5' seconds to avoid previously described issue.
+		sleep(5);
 
 		// Connect to the new interface
 		std::pair<std::string, int> new_host_port {};