Default MBED_CLOUD_SDK_HOST to HTTPS

Author: theotherjimmy

mbed/mbed.py

@@ -2732,10 +2732,13 @@ def dev_mgmt(toolchain=None, target=None, source=False, profile=False, build=Fal
         args += (['--toolchain', toolchain] if toolchain else [])
         args += (['--mcu', target] if target else [])
         args += (['--build', build_path] if build_path else [])
+    env = program.get_env()
+    if "MBED_CLOUD_SDK_HOST" not in env:
+        env["MBED_CLOUD_SDK_HOST"] = "https://api.us-east-1.mbedcloud.com"
     popen([python_cmd, '-u', script]
           + args
           + list(chain.from_iterable(zip(repeat('--source'), source or []))),
-          env=program.get_env())
+          env=env)
 
 # Export command
 @subcommand('export',