Try using Gitlab's REST API to download job artifacts

.gitlab-ci.yml

@@ -18,13 +18,13 @@ variables:
   REPO_DIR: gitlab.com/elixxir
   REPO_NAME: server
   DOCKER_IMAGE: carback1/golang-glide:1.9-d638096cef01
-  PRIVATEGRITY_REPOS: https://gitlab.com/elixxir
-  DL_URL_FRAG: -/jobs/artifacts/master/raw/release/
-  SERVER_URL: $PRIVATEGRITY_REPOS/server/$DL_URL_FRAG/server.linux64?job=build
-  CLIENT_URL: $PRIVATEGRITY_REPOS/client/$DL_URL_FRAG/client.linux64?job=build
-  CHANNELBOT_URL: $PRIVATEGRITY_REPOS/channelbot/$DL_URL_FRAG/channelbot.linux64?job=build
-  UDB_URL: $PRIVATEGRITY_REPOS/user-discovery-bot/$DL_URL_FRAG/udb.linux64?job=build
-  GATEWAY_URL: $PRIVATEGRITY_REPOS/gateway/$DL_URL_FRAG/gateway.linux64?job=build
+  REPOS_API: https://gitlab.com/api/v4/projects/elixxir%2F
+  DL_URL_FRAG: jobs/artifacts/master/raw
+  SERVER_URL: $REPOS_API/server/$DL_URL_FRAG/server.linux64?job=build
+  CLIENT_URL: $REPOS_API/client/$DL_URL_FRAG/client.linux64?job=build
+  CHANNELBOT_URL: $REPOS_API/channelbot/$DL_URL_FRAG/channelbot.linux64?job=build
+  UDB_URL: $REPOS_API/user-discovery-bot/$DL_URL_FRAG/udb.linux64?job=build
+  GATEWAY_URL: $REPOS_API/gateway/$DL_URL_FRAG/gateway.linux64?job=build
 
 before_script:
   ##