tests: distribute the http2-server.pl script, too

RELEASE-NOTES

@@ -13,6 +13,7 @@ This release includes the following changes:
 This release includes the following bugfixes:
 
  o include the CURLINFO_HTTP_VERSION(3) man page into the release tarball
+ o include the http2-server.pl script in the release tarball
 
 This release includes the following known bugs:
 

tests/Makefile.am

@@ -29,7 +29,7 @@ EXTRA_DIST = ftpserver.pl httpserver.pl secureserver.pl runtests.pl getpart.pm \
  $(HTMLPAGES) $(PDFPAGES) \
  serverhelp.pm tftpserver.pl rtspserver.pl directories.pm symbol-scan.pl \
  CMakeLists.txt mem-include-scan.pl valgrind.supp http_pipe.py extern-scan.pl \
- manpage-scan.pl nroff-scan.pl
+ manpage-scan.pl nroff-scan.pl http2-server.pl
 
 DISTCLEANFILES = configurehelp.pm