Update sysstat from 11.5.6 to 12.1.5 (#3340)

Fix hardcoded .spec filename in addition to updating the version.

packages/sysstat.rb

@@ -3,28 +3,15 @@ require "package"
 class Sysstat < Package
   description 'The sysstat utilities are a collection of performance monitoring tools for Linux. These include sar, sadf, mpstat, iostat, tapestat, pidstat, cifsiostat and sa tools.'
   homepage 'http://sebastien.godard.pagesperso-orange.fr/'
-  version '11.5.6'
-  source_url 'https://github.com/sysstat/sysstat/archive/v11.5.6.tar.gz'
-  source_sha256 '2ba2c6bfe0870e3b10061ec19b2623283d4922bc6d824b1ba6534a27001d9fa8'
-
-  binary_url ({
-    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/sysstat-11.5.6-chromeos-armv7l.tar.xz',
-     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/sysstat-11.5.6-chromeos-armv7l.tar.xz',
-       i686: 'https://dl.bintray.com/chromebrew/chromebrew/sysstat-11.5.6-chromeos-i686.tar.xz',
-     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/sysstat-11.5.6-chromeos-x86_64.tar.xz',
-  })
-  binary_sha256 ({
-    aarch64: '6376f9189581bb9ffa7801774fb3a64a00f2d9d10ae1dc86cc85019567e65954',
-     armv7l: '6376f9189581bb9ffa7801774fb3a64a00f2d9d10ae1dc86cc85019567e65954',
-       i686: '247b803049bca37d2b0af7c0d4a1f0e5d73c04069d1bcfe1f650bef8398c9c18',
-     x86_64: '2e52cf373e4eb15f317d4f1c1c5ef8ea865697102b061c98ce928bf1004c0ca5',
-  })
+  version '12.1.5'
+  source_url 'http://pagesperso-orange.fr/sebastien.godard/sysstat-12.1.5.tar.xz'
+  source_sha256 'a496936bb3f5093d780a50735f00e39b0b7f3a688eb89051f2ef5f86739522c5'
 
   def self.build
     system "sed -i 's/GRP=root/GRP=$(whoami)/' configure"
     system "sed -i 's/\"root\"/\"$(whoami)\"/g' configure"
     system "sed -i 's/root/$(whoami)/g' configure.in"
-    system "sed -i 's/root/$(whoami)/g' sysstat-11.5.6.spec"
+    system "sed -i 's/root/$(whoami)/g' sysstat-#{self.version}.spec"
     system "./configure \
             --docdir=#{CREW_PREFIX}/doc \
             --infodir=#{CREW_PREFIX}/info \