[TD-6560]<test>: Add unit test cases for parsing OpenTSDB HTTP JSON data import format

tests/examples/c/makefile

@@ -6,8 +6,8 @@ TARGET=exe
 LFLAGS = '-Wl,-rpath,/usr/local/taos/driver/' -ltaos -lpthread -lm -lrt
 CFLAGS = -O3 -g -Wall -Wno-deprecated -fPIC -Wno-unused-result -Wconversion \
 	-Wno-char-subscripts -D_REENTRANT -Wno-format -D_REENTRANT -DLINUX \
-	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99
-
+	-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99 \
+	-I../../../deps/cJson/inc
 all: $(TARGET)
 
 exe: