Prevent rustup self update (#327)

By default `rusup` performs a self-update when installing a new rustc
toolchain, Sometimes, the files are locked by windows, and the self
update can fail as described here:
rust-lang/rustup#2441

Since this is a pipeline run, we have no need to update rustup, and can
rely on the version provided by the runner. By disabling the self
update, the file conflict `The process cannot access the file because it
is being used by another process` no longer appears.

Author: Javagedes

.sync/Version.njk

@@ -30,7 +30,7 @@
 #}
 
 {# The git ref value that files dependent on this repo will use. #}
-{% set mu_devops = "v9.1.6" %}
+{% set mu_devops = "v9.1.7" %}
 
 {# The latest Project Mu release branch value. #}
 {% set latest_mu_release_branch = "release/202311" %}

.sync/azure_pipelines/RustSetupSteps.yml

@@ -82,11 +82,15 @@ steps:
 # those on both Linux and Windows agents for consistency in the pipeline runs.
 #
 - script: |
-    rustup install {{ sync_version.rust_toolchain }}
-    rustup default {{ sync_version.rust_toolchain }}
+    rustup install --no-self-update {{ sync_version.rust_toolchain }}
   displayName: Install Rust {{ sync_version.rust_toolchain }} (Windows)
   condition: eq(variables['Agent.OS'], 'Windows_NT')
 
+- script: |
+    rustup default {{ sync_version.rust_toolchain }}
+  displayName: Set Rust {{ sync_version.rust_toolchain }} (Windows)
+  condition: eq(variables['Agent.OS'], 'Windows_NT')
+
 - script: pip install requests --upgrade
   displayName: Install and Upgrade requests PIP Module
   condition: succeeded()

Steps/RustSetupSteps.yml

@@ -79,11 +79,15 @@ steps:
 # those on both Linux and Windows agents for consistency in the pipeline runs.
 #
 - script: |
-    rustup install 1.74.0
-    rustup default 1.74.0
+    rustup install --no-self-update 1.74.0
   displayName: Install Rust 1.74.0 (Windows)
   condition: eq(variables['Agent.OS'], 'Windows_NT')
 
+- script: |
+    rustup default 1.74.0
+  displayName: Set Rust 1.74.0 (Windows)
+  condition: eq(variables['Agent.OS'], 'Windows_NT')
+
 - script: pip install requests --upgrade
   displayName: Install and Upgrade requests PIP Module
   condition: succeeded()