Add a LLDB buildbot builder for FreeBSD

[tigergao99]

Summary

Add a LLDB buildbot builder for FreeBSD.
Build workers credentials still need be added.

[tigergao99]

Updated after rebasing to upstream master

[rengolin]

W00t! FreeBSD FTW!

[tigergao99]

Any updates on this differential?

[rengolin]

The change looks good to me but @gkistanova usually handles buildbot operations, so I don't want to approve before she has time to look at it.

[gkistanova]

LGTM with a nitpick.

buildbot/osuosl/master/config/builders.py

996

Do you need the OS version to be a part of the name?
Are you going to run bots for different versions simultaneously? If not, then maybe more generic names are better, since versions will change over time.

[tigergao99]

buildbot/osuosl/master/config/builders.py

996

Makes sense to me. I will use a generic name instead.

[tigergao99]

The patch is ready to be committed now

[gkistanova]

Thanks for changing the names,
Please feel free to commit.

[tigergao99]

https://github.com/tigergao99/llvm-zorg
@emaste

buildbot/osuosl/master/config/builders.py

'factory' : LLDBBuilder.getLLDBCMakeBuildFactory(
                     target_arch='x64',
                     vs="autodetect",
                     test=True,
                     extra_cmake_args=[
                         '-DLLVM_ENABLE_ASSERTIONS=OFF',
                         '-DLLVM_ENABLE_ZLIB=FALSE',
                         '-DLLDB_ENABLE_PYTHON=TRUE'])},
 
+    {'name' : "lldb-x86_64-freebsd",
+    'tags'  : ["lldb"],
+    'workernames' : ["lldb-x86_64-freebsd"],
+    'builddir': "lldb-x86_64-freebsd",
+    'factory' : LLDBBuilder.getLLDBCMakeBuildFactory(
+                    test=True)},
+
 # LLD builders.
 
     {'name' : "lld-x86_64-darwin",
     'tags'  : ["lld"],
     'workernames' : ["as-worker-3"],
     'builddir': "lld-x86_64-darwin",
     'factory' : UnifiedTreeBuilder.getCmakeWithNinjaBuildFactory(
                     clean=True,

buildbot/osuosl/master/config/workers.py

return [
         create_worker("fuchsia-debian-64-us-central1-b-1", properties={'jobs': 64}, max_builds=1),
 
         # Fedora latest stable x86_64, Intel i5-2500, 4 cores, 12GB RAM
         create_worker("lldb-x86_64-fedora", properties={'jobs': 4}, max_builds=1),
 
         # Fedora latest stable, arch=x86_64, running on RedHat internal OpenShift PSI cluster
         create_worker("fedora-llvm-x86_64", properties={'jobs': 64}, max_builds=1),
 
+        # FreeBSD latest x86_64
+        create_worker("lldb-x86_64-freebsd", properties={'jobs': 2}, max_builds=1),
+
         # Debian x86_64 Buster Xeon(R) Gold 6154 CPU @ 3.00GHz, 192GB RAM
         create_worker("lldb-x86_64-debian", properties={'jobs': 72}, max_builds=1),
 
         # Debian x86_64 Intel Broadwell 32 CPUs, 120 GB RAM
         create_worker("libc-x86_64-debian", properties={'jobs': 32}, max_builds=2),
 
         # Windows Server on Xeon Gold 6130 (2x2.1GHz), 128Gb of RAM
         create_worker("as-builder-1", properties={