add default requests_dir in example for backward compatibility

Signed-off-by: Max de Bayser <[email protected]>

.env.example

@@ -19,6 +19,9 @@ FRAC_GREEDY=1.0
 # number of input requests to generate (virtual users will sample from these)
 SAMPLE_SIZE=1
 
+# Default requests directory
+REQUESTS_DIR=/requests
+
 # requests file
 REQUESTS_FILENAME=sample_requests.json