Changes 'command' command to 'hash' command as the latter has the desired effect on ubuntu

manifests/install.pp

@@ -6,7 +6,7 @@
 #   include anaconda::install
 class anaconda::install {
   exec { 'initalinstallconda':
-    unless  => 'command conda',
+    unless  => 'hash conda',
     command => 'wget https://repo.continuum.io/miniconda/Miniconda3-3.7.0-Linux-x86_64.sh -O ~/miniconda.sh && bash ~/miniconda.sh -b -p $HOME/miniconda',
   }
 }