Gradle build on a clean repository checkout fails

[cpiotr]

Defect

It is currently impossible to build the project on a clean repository checkout.

Make sure that these boxes are checked before submitting your issue -- thank you!

• Included a [Minimal, Complete, and Verifiable example] (https://stackoverflow.com/help/mcve)

Versions of io.nats:jnats and nats-server:

n/a

OS/Container environment:

n/a

Steps or code to reproduce the issue:

• Clone the repository on a new host (where plugins are not cached locally)

git clone git@github.com:nats-io/nats.java.git
cd nats.java

• Build the project

./gradlew clean build -x test

Expected result:

A successful build run:

BUILD SUCCESSFUL in 6s

Actual result:

Build fails with the following error:

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'java-nats'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not resolve org.codehaus.groovy.modules.http-builder:http-builder:0.7.1.
     Required by:
         project : > com.github.kt3k.coveralls:com.github.kt3k.coveralls.gradle.plugin:2.12.0 > gradle.plugin.org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.12.0
      > Could not resolve org.codehaus.groovy.modules.http-builder:http-builder:0.7.1.
         > Could not get resource 'https://plugins.gradle.org/m2/org/codehaus/groovy/modules/http-builder/http-builder/0.7.1/http-builder-0.7.1.pom'.
            > Could not GET 'https://jcenter.bintray.com/org/codehaus/groovy/modules/http-builder/http-builder/0.7.1/http-builder-0.7.1.pom'.
               > PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
   > Could not resolve org.apache.httpcomponents:httpmime:4.5.11.
     Required by:
         project : > com.github.kt3k.coveralls:com.github.kt3k.coveralls.gradle.plugin:2.12.0 > gradle.plugin.org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.12.0
      > Could not resolve org.apache.httpcomponents:httpmime:4.5.11.
         > Could not get resource 'https://plugins.gradle.org/m2/org/apache/httpcomponents/httpmime/4.5.11/httpmime-4.5.11.pom'.
            > Could not GET 'https://jcenter.bintray.com/org/apache/httpcomponents/httpmime/4.5.11/httpmime-4.5.11.pom'.
               > PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target