test: Update travis build to include a basic klippy host test

Move the travis installation steps from the travis-build.sh script to
a new script (scripts/travis-install.sh).  Move the travis-build.sh
script to the scripts/ directory as well.

The data dictionaries built in the compile tests are useful during
host software testing, so run all the compile tests sequentially in a
single VM and save the data dictionaries after each build.  Also,
build all the config files found in the test/configs/ directory.

Create the python virtualenv environment during the install phase and
invoke the klippy.py host software in the build phase to perform a
basic host software sanity check.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

test/configs/beaglebone.config

@@ -1,2 +0,0 @@
-# Base config file for beaglebone
-CONFIG_MACH_PRU=y

test/travis-build.sh

@@ -1,35 +0,0 @@
-#!/bin/bash
-set -eux
-if [ -z ${TARGET+x} ]; then
-    if [ -z ${1+x} ]; then
-        echo "Need a TARGET as environment variable or first parameter!"
-        exit 1
-    else
-        TARGET="$1"
-    fi
-fi
-
-echo "Target is '$TARGET'"
-make clean
-make distclean
-unset CC
-cp test/configs/${TARGET}.config .config
-make olddefconfig
-
-if [ ! -z ${GCC_SRC+x} ]; then
-    if [ -z ${GCC_DIR+x} ]; then
-        echo "Need a GCC_DIR together with GCC_SRC!"
-        exit 1
-    fi
-    if [ -e "$GCC_DIR" ]; then
-        echo "Reusing GCC in '$GCC_DIR'"
-    else
-        echo "Getting GCC from '$GCC_SRC'"
-        wget "$GCC_SRC"
-        echo "Unpacking GCC to '$GCC_DIR'"
-        tar xf $(basename "$GCC_SRC")
-    fi
-    export PATH=$GCC_DIR/bin:$PATH
-fi
-
-make V=1