Tweak repoid constant name to match Solr version

Author: Jason Gerlowski

build.gradle

@@ -45,7 +45,7 @@ distributions {
       into(reposinfo740) {
         from { repostemplate }
         filter { line ->
-          line.replace("{REPOID}", "${repoid731}")
+          line.replace("{REPOID}", "${repoid740}")
         }
       }
     }

gradle.properties

@@ -10,4 +10,4 @@ repoid662=HDP-SOLR-3.0.0-100
 
 # Solr 7.4.0 repo
 # TODO a Solr repo is needed
-repoid731=HDP-SOLR-3.0.0-100
+repoid740=HDP-SOLR-3.0.0-100