update git URLs (git -> https; gitea)

Change-Id: I8788fa6b0495b8ee72b1bb5485f6cd3a4835eb0b
diff --git a/configure.ac b/configure.ac
index fbcdab5..354b462 100644
--- a/configure.ac
+++ b/configure.ac
@@ -121,7 +121,7 @@
 	fi
 	AC_CHECK_PROG(OSMOTESTEXT_CHECK,osmotestvty.py,yes)
 	 if test "x$OSMOTESTEXT_CHECK" != "xyes" ; then
-		AC_MSG_ERROR([Please install git://osmocom.org/python/osmo-python-tests to run the VTY/CTRL tests.])
+		AC_MSG_ERROR([Please install https://gitea.osmocom.org/cellular-infrastructure/osmo-python-tests to run the VTY/CTRL tests.])
 	fi
 fi
 AC_MSG_CHECKING([whether to enable VTY/CTRL tests])