[Ubuntu] Migrate Browsers and Rust tests to Pester (#2323)

* add tests for browsers and rust

* small fix

* fix tests invoking

* small fixes

* resolve conflicts

* fix firefox test

images/linux/scripts/installers/rust.sh

@@ -6,6 +6,7 @@
 
 # Source the helpers for use with the script
 source $HELPER_SCRIPTS/etc-environment.sh
+source $HELPER_SCRIPTS/invoke-tests.sh
 
 export RUSTUP_HOME=/usr/share/rust/.rustup
 export CARGO_HOME=/usr/share/rust/.cargo
@@ -21,18 +22,9 @@ cargo install bindgen cbindgen
 cargo install cargo-audit
 cargo install cargo-outdated
 
-echo "Test installation of the Rust toochain"
-
 # Permissions
 chmod -R 777 $(dirname $RUSTUP_HOME)
 
-for cmd in rustup rustc rustdoc cargo rustfmt cargo-clippy bindgen cbindgen 'cargo audit' 'cargo outdated'; do
-    if ! command -v $cmd --version; then
-        echo "$cmd was not installed or is not found on the path"
-        exit 1
-    fi
-done
-
 # Cleanup Cargo cache
 rm -rf ${CARGO_HOME}/registry/*
 
@@ -44,3 +36,5 @@ pushd /etc/skel
 ln -sf $RUSTUP_HOME .rustup
 ln -sf $CARGO_HOME .cargo
 popd
+
+invoke_tests "Tools" "Rust"