travis: Switch to docker based builds

This requires to have distro specific install scripts and build.sh
script.

For now ibmswtpm2 is compiled just for native builds (depends on gcc,
compiled natively). libtmps/swtpm could be used.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Bruno Meneguele <bmeneg@redhat.com>(Fedora,CentOS 8(RHEL actually))
[zohar@linux.ibm.com: removed debugging in travis/fedora.sh]
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

travis/debian.sh

@@ -0,0 +1,54 @@
+#!/bin/sh
+# Copyright (c) 2020 Petr Vorel <pvorel@suse.cz>
+set -ex
+
+if [ -z "$CC" ]; then
+	echo "missing \$CC!" >&2
+	exit 1
+fi
+
+# debian.*.sh must be run first
+if [ "$ARCH" ]; then
+	ARCH=":$ARCH"
+	unset CC
+else
+	apt update
+fi
+
+# ibmswtpm2 requires gcc
+[ "$CC" = "gcc" ] || CC="gcc $CC"
+
+case "$TSS" in
+ibmtss) TSS="libtss-dev";;
+tpm2-tss) TSS="libtss2-dev";;
+'') echo "Missing TSS!" >&2; exit 1;;
+*) [ "$TSS" ] && echo "Unsupported TSS: '$TSS'!" >&2; exit 1;;
+esac
+
+apt="apt install -y --no-install-recommends"
+
+$apt \
+	$CC $TSS \
+	asciidoc \
+	attr \
+	autoconf \
+	automake \
+	diffutils \
+	debianutils \
+	docbook-xml \
+	docbook-xsl \
+	gzip \
+	libattr1-dev$ARCH \
+	libkeyutils-dev$ARCH \
+	libssl-dev$ARCH \
+	libtool \
+	make \
+	openssl \
+	pkg-config \
+	procps \
+	sudo \
+	wget \
+	xsltproc \
+
+$apt xxd || $apt vim-common
+$apt libengine-gost-openssl1.1$ARCH || true