Merge pull request #292 from catern/master

ZNC: don't make install if configure or make fail

roles/ircbouncer/tasks/znc.yml

   command: tar xzf /root/znc-{{ znc_version }}.tar.gz chdir=/root creates=/root/znc-{{ znc_version }}/configure
 
 - name: Build and install znc
-  shell: ./configure --enable-python ; make ; make install executable=/bin/bash chdir=/root/znc-{{ znc_version }} creates=/usr/local/bin/znc
+  shell: ./configure --enable-python && make && make install executable=/bin/bash chdir=/root/znc-{{ znc_version }} creates=/usr/local/bin/znc
   notify: restart znc
 
 - name: Create znc group