correct precise64 AMI's for us-west-1

Looks like there was a copy/paste error, the AMI's that were in there
before were the same as Europe.  These new ones work.

cloudformation_templates/edx-server-multi-instance.json

@@ -55,7 +55,7 @@
 
     "AWSRegionArch2AMI" : {
       "us-east-1" :      { "32" : "ami-def89fb7", "64" : "ami-d0f89fb9" },
-      "us-west-1" :      { "32" : "ami-fc002cb9", "64" : "ami-ce7b6fba" },
+      "us-west-1" :      { "32" : "ami-fc002cb9", "64" : "ami-fe002cbb" },
       "us-west-2" :      { "32" : "ami-0ef96e3e", "64" : "ami-70f96e40" },
       "eu-west-1" :      { "32" : "ami-c27b6fb6", "64" : "ami-ce7b6fba" },
       "sa-east-1"      : { "32" : "ami-a1da00bc", "64" : "ami-a3da00be" },

cloudformation_templates/edx-server-single-instance.json

@@ -54,7 +54,7 @@
 
     "AWSRegionArch2AMI" : {
       "us-east-1" :      { "32" : "ami-def89fb7", "64" : "ami-d0f89fb9" },
-      "us-west-1" :      { "32" : "ami-fc002cb9", "64" : "ami-ce7b6fba" },
+      "us-west-1" :      { "32" : "ami-fc002cb9", "64" : "ami-fe002cbb" },
       "us-west-2" :      { "32" : "ami-0ef96e3e", "64" : "ami-70f96e40" },
       "eu-west-1" :      { "32" : "ami-c27b6fb6", "64" : "ami-ce7b6fba" },
       "sa-east-1"      : { "32" : "ami-a1da00bc", "64" : "ami-a3da00be" },

playbooks/files/edx-server-ubuntu-configuration.json

@@ -54,7 +54,7 @@
 
     "AWSRegionArch2AMI" : {
       "us-east-1" :      { "32" : "ami-def89fb7", "64" : "ami-d0f89fb9" },
-      "us-west-1" :      { "32" : "ami-fc002cb9", "64" : "ami-ce7b6fba" },
+      "us-west-1" :      { "32" : "ami-fc002cb9", "64" : "ami-fe002cbb" },
       "us-west-2" :      { "32" : "ami-0ef96e3e", "64" : "ami-70f96e40" },
       "eu-west-1" :      { "32" : "ami-c27b6fb6", "64" : "ami-ce7b6fba" },
       "sa-east-1"      : { "32" : "ami-a1da00bc", "64" : "ami-a3da00be" },