test1800: first plain-text http2 test case

Verifies the upgrade request, but gets a plain 1.1 response

tests/data/test1800

@@ -0,0 +1,55 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+http2
+</keywords>
+</info>
+
+# Server-side
+<reply>
+<data>
+HTTP/1.1 200 Ignored!
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Last-Modified: Tue, 13 Jun 2000 12:10:00 GMT
+Content-Length: 6
+Connection: close
+Content-Type: text/html
+
+-foo-
+</data>
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+<features>
+http2
+</features>
+ <name>
+HTTP/2 upgrade refused
+ </name>
+ <command>
+http://%HOSTIP:%HTTPPORT/1800 --http2
+</command>
+
+</client>
+
+<verify>
+<strip>
+^User-Agent:.*
+</strip>
+<protocol>
+GET /1800 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+Connection: Upgrade, HTTP2-Settings
+Upgrade: %H2CVER
+HTTP2-Settings: AAMAAABkAAQAAP__
+
+</protocol>
+</verify>
+</testcase>