[travis] Travis doesn't have libsodium, so disable verification

.travis.yml

@@ -3,12 +3,11 @@ sudo: required
 dist: trusty
 env:
   matrix:
-    - CFG=""
-    - CFG="--enable-lastfm"
-    - CFG="--enable-spotify"
-    - CFG="--enable-chromecast"
     - CFG="--disable-verification"
-    - CFG="--with-pulseaudio"
+    - CFG="--enable-lastfm --disable-verification"
+    - CFG="--enable-spotify --disable-verification"
+    - CFG="--enable-chromecast --disable-verification"
+    - CFG="--with-pulseaudio --disable-verification"
 
 script:
   - autoreconf -fi
@@ -19,7 +18,7 @@ before_install:
   - wget -q -O - https://apt.mopidy.com/mopidy.gpg | sudo apt-key add -
   - sudo wget -q -O /etc/apt/sources.list.d/mopidy.list https://apt.mopidy.com/jessie.list
   - sudo apt-get -qq update
-  - sudo apt-get install -y build-essential clang git autotools-dev autoconf libtool gettext gawk gperf antlr3 libantlr3c-dev libconfuse-dev libunistring-dev libsqlite3-dev libavcodec-dev libavformat-dev libavfilter-dev libswscale-dev libavutil-dev libasound2-dev libmxml-dev libgcrypt11-dev libavahi-client-dev zlib1g-dev libevent-dev libplist-dev libcurl4-openssl-dev libjson-c-dev libspotify-dev libgnutls-dev libprotobuf-c0-dev libpulse-dev libsodium-dev
+  - sudo apt-get install -y build-essential clang git autotools-dev autoconf libtool gettext gawk gperf antlr3 libantlr3c-dev libconfuse-dev libunistring-dev libsqlite3-dev libavcodec-dev libavformat-dev libavfilter-dev libswscale-dev libavutil-dev libasound2-dev libmxml-dev libgcrypt11-dev libavahi-client-dev zlib1g-dev libevent-dev libplist-dev libcurl4-openssl-dev libjson-c-dev libspotify-dev libgnutls-dev libprotobuf-c0-dev libpulse-dev
   
 # Disable email notification
 notifications: