QA assurance: set up a very basic Travis CI test for the PPA

This is to be run daily by Travis, ensure it least bare basic
usability of the PPA.

see also #69

.travis.yml

@@ -0,0 +1,23 @@
+os: linux
+
+language: c
+
+compiler: gcc
+
+before_install:
+  - sudo add-apt-repository ppa:adiscon/v8-devel -y
+
+notifications:
+  email:
+    - [email protected]
+
+script:
+- echo "stock rsyslog is"
+- rsyslogd -v
+- sudo apt update -y
+- apt-cache search rsyslog
+- apt-cache showpkg "rsyslog*"
+- sudo apt install rsyslog -y
+- rsyslogd -v
+- sudo service rsyslog restart
+- sudo apt install rsyslog-kafka