Fixup the principal creation calls in the setup scripts

Add param "--with-passphrase=false" to the "principal create"
commands, otherwise the principals will be unusable in the
examples.

Change-Id: I3bc0671a182351e2f10f1bc6041ff43b5b126b31
diff --git a/content/tutorials/security/first-party-caveats.md b/content/tutorials/security/first-party-caveats.md
index a1cc1fb..83f3210 100644
--- a/content/tutorials/security/first-party-caveats.md
+++ b/content/tutorials/security/first-party-caveats.md
@@ -49,7 +49,7 @@
 
 <!-- @createDiane @test -->
 ```
-$V_BIN/principal create --overwrite $V_TUT/cred/diane diane
+$V_BIN/principal create --with-passphrase=false --overwrite $V_TUT/cred/diane diane
 ```
 
 As a new principal, Diane has no blessings (other than the default
diff --git a/content/tutorials/security/permissions-authorizer.md b/content/tutorials/security/permissions-authorizer.md
index 5f3032e..6d2fa90 100644
--- a/content/tutorials/security/permissions-authorizer.md
+++ b/content/tutorials/security/permissions-authorizer.md
@@ -152,7 +152,7 @@
 
 <!-- @createCarol @test @completer -->
 ```
-$V_BIN/principal create --overwrite $V_TUT/cred/carol carol
+$V_BIN/principal create --with-passphrase=false --overwrite $V_TUT/cred/carol carol
 ```
 
 At this point no request from Carol will succeed because Carol is
diff --git a/content/tutorials/security/principals-and-blessings.md b/content/tutorials/security/principals-and-blessings.md
index f21e356..61fb3c4 100644
--- a/content/tutorials/security/principals-and-blessings.md
+++ b/content/tutorials/security/principals-and-blessings.md
@@ -29,8 +29,8 @@
 
 <!-- @makeAliceAndBob @test @completer -->
 ```
-$V_BIN/principal create --overwrite $V_TUT/cred/alice alice
-$V_BIN/principal create --overwrite $V_TUT/cred/bob bob
+$V_BIN/principal create --with-passphrase=false --overwrite $V_TUT/cred/alice alice
+$V_BIN/principal create --with-passphrase=false --overwrite $V_TUT/cred/bob bob
 ```
 
 Run the server with Alice's credentials (i.e, authenticate as `alice`):