Upgrade mac taskcluster workers to generic worker 10.8.4

[dragoscrisan]

• changed the generic-worker version
• added version tag for tasckcluster-proxy
• Added an exect block to generate generic-worker signingKey
• changed generic-worker config file by add information for tasckcluster-proxy
• installed tasck-cluster proxy on /usr/local/bin location
• added proxy httpd file, to redirect curl http://taskcluster to port 8080 (taskcluster-proxy listen on this port)

[davehouse]

+1 Looks good. I confirmed the binaries are in place:

dhouse@releng-puppet2:~$ ls -la /data/repos/EXEs/taskcluster-proxy*
-rw-r--r-- 1 puppetsync puppetsync 7154352 May  7 00:31 /data/repos/EXEs/taskcluster-proxy-v4.1.0-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 7623136 May  7 06:40 /data/repos/EXEs/taskcluster-proxy-v4.1.1-darwin-amd64
dhouse@releng-puppet2:~$ ls -la /data/repos/EXEs/generic-worker-v*
-rw-r--r-- 1 puppetsync puppetsync 12476624 Aug  4  2017 /data/repos/EXEs/generic-worker-v10.2.0-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 12520912 Sep 13  2017 /data/repos/EXEs/generic-worker-v10.2.2-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 12529664 Sep 26  2017 /data/repos/EXEs/generic-worker-v10.2.3-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 13649952 May  8 01:06 /data/repos/EXEs/generic-worker-v10.7.12-darwin-amd64
-rw-rw-r-- 1 puppetsync puppetsync 13656704 Apr  1 08:55 /data/repos/EXEs/generic-worker-v10.7.8-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 13691616 Jun  6 06:01 /data/repos/EXEs/generic-worker-v10.8.4-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 11632208 Mar 25  2017 /data/repos/EXEs/generic-worker-v8.0.1-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 11810992 Apr  4  2017 /data/repos/EXEs/generic-worker-v8.1.1-darwin-amd64
-rw-r--r-- 1 puppetsync puppetsync 11477792 May  4  2017 /data/repos/EXEs/generic-worker-v8.5.0-darwin-amd64