Mavenによるデプロイ時にSSLエラーが発生する

###発生している問題・エラーメッセージ
Maven3.3.3にてmvn deployを行うとSSLエラーが発生してしまいます。

デプロイ先はnginxのwebdavです
以下nginxのコンフィグです

nginx
1    location / {
2      root /var/www/maven;
3
4      auth_basic "maven";
5      auth_basic_user_file /etc/nginx/conf.d/.htpasswd;
6
7      client_max_body_size   100m;
8
9      autoindex on;
10      autoindex_exact_size off;
11      autoindex_localtime on;
12
13      client_body_temp_path  /var/www/maven;
14      create_full_put_path on;
15
16      dav_access group:r all:r;
17      dav_methods  PUT DELETE MKCOL COPY MOVE;
18    }
19

maven上でのエラーは以下のものになります

maven
1[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project PRJ: Failed to retrieve remote metadata PRJ:1.0-SNAPSHOT/maven-metadata.xml: Could not transfer metadata PRJ:1.0-SNAPSHOT/maven-metadata.xml from/to snapshots (https://URL/snapshots): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 1]
2[ERROR] 
3[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
4[ERROR] Re-run Maven using the -X switch to enable full debug logging.
5[ERROR] 
6[ERROR] For more information about the errors and possible solutions, please read the following articles:
7[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
8