Move list of required packages into plain text file and GC

.travis.yml which "serves no purpose anymore".

scripts/build/apt_requirements.txt

@@ -0,0 +1,34 @@
+flex
+bison
+make
+libsqlite3-dev
+libsctp-dev
+libradcli-dev
+libhiredis-dev
+libodbc1
+odbcinst
+odbcinst1debian2
+unixodbc
+unixodbc-dev
+libconfuse-dev
+libmysqlclient-dev
+libexpat1-dev
+libxml2-dev
+libpq-dev
+zlib1g-dev
+libperl-dev
+libsnmp-dev
+libdb-dev
+libldap2-dev
+libcurl4-gnutls-dev
+libgeoip-dev
+libpcre3-dev
+libmemcached-dev
+libmicrohttpd-dev
+librabbitmq-dev
+liblua5.1-0-dev
+libncurses5-dev
+libjson-c-dev
+uuid-dev
+python-dev
+libmaxminddb-dev

scripts/build/install_depends.sh

@@ -4,7 +4,7 @@ set -e
 
 . $(dirname $0)/dockerize.sub
 
-PKGS="`grep -A 35 packages: .travis.yml  | grep -e '^ *[-]' | awk '{print $2}'`"
+PKGS="`cat "$(dirname $0)/apt_requirements.txt"`"
 
 . $(dirname $0)/build.conf.sub