LS-5330: Make TLS the default collector_encryption

This was the default before my proto change. And I noticed this
open PR #43
which had some feedback about that.

Author: frenchfrywpepper

examples/http/context_in_headers.py

@@ -122,16 +122,16 @@ def lightstep_tracer_from_args():
             default='collector.lightstep.com')
     parser.add_argument('--port', help='The LightStep reporting service port.',
             type=int, default=443)
-    parser.add_argument('--use_tls', help='Use TLS for reporting',
-                        dest="use_tls", action='store_true')
+    parser.add_argument('--no_tls', help='Disable TLS for reporting',
+                        dest="no_tls", action='store_true')
     parser.add_argument('--component_name', help='The LightStep component name',
             default='TrivialExample')
     args = parser.parse_args()
 
-    if args.use_tls:
-        collector_encryption = 'tls'
-    else:
+    if args.no_tls:
         collector_encryption = 'none'
+    else:
+        collector_encryption = 'tls'
 
     return lightstep.Tracer(
             component_name=args.component_name,

examples/nontrivial/main.py

@@ -70,16 +70,16 @@ def lightstep_tracer_from_args():
                         default='collector.lightstep.com')
     parser.add_argument('--port', help='The LightStep reporting service port.',
                         type=int, default=443)
-    parser.add_argument('--use_tls', help='Use TLS for reporting',
-                        dest="use_tls", action='store_true')
+    parser.add_argument('--no_tls', help='Disable TLS for reporting',
+                        dest="no_tls", action='store_true')
     parser.add_argument('--component_name', help='The LightStep component name',
                         default='NonTrivialExample')
     args = parser.parse_args()
 
-    if args.use_tls:
-        collector_encryption = 'tls'
-    else:
+    if args.no_tls:
         collector_encryption = 'none'
+    else:
+        collector_encryption = 'tls'
 
     return lightstep.Tracer(
         component_name=args.component_name,

examples/trivial/main.py

@@ -63,18 +63,18 @@ def lightstep_tracer_from_args():
                         default='collector.lightstep.com')
     parser.add_argument('--port', help='The LightStep reporting service port.',
                         type=int, default=443)
-    parser.add_argument('--use_tls', help='Use TLS for reporting',
-                        dest="use_tls", action='store_true')
+    parser.add_argument('--no_tls', help='Disable TLS for reporting',
+                        dest="no_tls", action='store_true')
     parser.add_argument('--component_name', help='The LightStep component name',
                         default='TrivialExample')
     parser.add_argument('--use_http', help='Use proto over http',
                         dest="use_http", action='store_true')
     args = parser.parse_args()
 
-    if args.use_tls:
-        collector_encryption = 'tls'
-    else:
+    if args.no_tls:
         collector_encryption = 'none'
+    else:
+        collector_encryption = 'tls'
 
     return lightstep.Tracer(
             component_name=args.component_name,