travis: improve build process and expand build matrix

Make a build heriarchy to reduce images size.
Add Android Things builds to build matrix.
Drop gcc-4 builds, use gcc-5 and gcc-6 instead.
Add SonarQube static analysis scans.

Signed-off-by: Nicolas Oliver <dario.n.oliver@intel.com>

scripts/run-cmake.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+# Run cmake
+cmake \
+  -DSWIG_EXECUTABLE=/usr/bin/swig \
+  -DBUILDDOC=$BUILDDOC \
+  -DBUILDCPP=$BUILDCPP \
+  -DBUILDFTI=$BUILDFTI \
+  -DBUILDSWIGPYTHON=$BUILDSWIGPYTHON \
+  -DBUILDSWIGNODE=$BUILDSWIGNODE \
+  -DBUILDSWIGJAVA=$BUILDSWIGJAVA \
+  -DBUILDEXAMPLES=$BUILDEXAMPLES \
+  -DIPK=$IPK \
+  -DRPM=$RPM \
+  -DNPM=$NPM \
+  -DBUILDTESTS=$BUILDTESTS \
+  -DWERROR=$WERROR \
+  -H. \
+  -Bbuild
+