Add more Erlang versions to CI_OTP

Makefile

@@ -11,7 +11,11 @@ dep_ct_helper = git https://github.com/extend/ct_helper.git master
 
 COMPILE_FIRST = ranch_transport
 PLT_APPS = crypto public_key ssl
-CI_OTP = OTP_R15B01 OTP_R15B02 OTP_R15B03-1 OTP_R16B01 OTP_R16B02 OTP_R16B03-1 # OTP-17.0.2 OTP-17.1.2 OTP-17.2.2 OTP-17.3.4 OTP-17.4.1 OTP-17.5.6.2 OTP-18.0.2
+CI_OTP = \
+	OTP_R15B01 OTP_R15B02 OTP_R15B03-1 \
+	OTP_R16B OTP_R16B01 OTP_R16B02 OTP_R16B03-1 \
+	OTP-17.0.2 OTP-17.1.2 OTP-17.2.2 OTP-17.3.4 OTP-17.4.1 OTP-17.5.6.2 \
+	OTP-18.0.2
 
 # Standard targets.