Adding JCenter to resolvers doesn't work #2465
Description
steps
resolvers += Resolver.jcenterRepoproblem
externalResolvers doesn't contain JCenter:
> show externalResolvers
[info] ArrayBuffer(
FileRepository(local,FileConfiguration(true,None),Patterns(ivyPatterns=List(${ivy.home}/local/[organisation]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext]), artifactPatterns=List(${ivy.home}/local/[organisation]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext]), isMavenCompatible=false, descriptorOptional=false, skipConsistencyCheck=false)),
public: https://repo1.maven.org/maven2/,
public: https://repo1.maven.org/maven2/
)expectation
externalResolvers shouldn't remove from resolvers