added tests for missing combination of features

We have a few combination of features that were not tested with the CI
due to switching to rust-vmm-ci and adding the fam-wrappers feature.

Added a new Buildkite pipeline for the missing tests.

Signed-off-by: Andreea Florescu <fandree@amazon.com>

Author: andreeaflorescu

.buildkite/pipeline.yml

@@ -0,0 +1,109 @@
+steps:
+  # Test release build with kernel bindings 4.14.
+  - label: "build-v4.14-x86"
+    commands:
+     - cargo build --release --features=fam-wrappers,kvm-v4_14_0
+     - cargo build --release --features=fam-wrappers,kvm-v4_14_0 --target x86_64-unknown-linux-musl
+     - cargo build --release --features=kvm-v4_14_0
+     - cargo build --release --features=kvm-v4_14_0 --target x86_64-unknown-linux-musl
+    retry:
+      automatic: false
+    agents:
+      platform: x86_64.metal
+      os: linux
+    plugins:
+      - docker#v3.0.1:
+          image: "rustvmm/dev:v4"
+          always-pull: true
+
+  # Test release build with kernel bindings 4.20 and fam-wrappers feature.
+  - label: "build-v4.20-x86"
+    commands:
+     - cargo build --release --features=fam-wrappers,kvm-v4_20_0
+     - cargo build --release --features=fam-wrappers,kvm-v4_20_0 --target x86_64-unknown-linux-musl
+      # No need to test the kvm-v4_20_0 because that one is tested by default when no kernel bindings
+      # feature is specified.
+    retry:
+      automatic: false
+    agents:
+      platform: x86_64.metal
+      os: linux
+    plugins:
+      - docker#v3.0.1:
+          image: "rustvmm/dev:v4"
+          always-pull: true
+
+  - label: "build-v4.14-arm"
+    commands:
+      - cargo build --release --features=kvm-v4_14_0
+      - cargo build --release --features=kvm-v4_14_0 --target aarch64-unknown-linux-musl
+    retry:
+      automatic: false
+    agents:
+      platform: arm.metal
+      os: linux
+    plugins:
+      - docker#v3.0.1:
+          image: "rustvmm/dev:v4"
+          always-pull: true
+
+  # Run unit tests for 4.14 bindings. These are the only ones that are not run by the rust-vmm-ci.
+  - label: "unittests-v4.14-x86"
+    command:
+      - cargo test --features=kvm-v4_14_0
+      - cargo test --features=kvm-v4_14_0 --target x86_64-unknown-linux-musl
+    retry:
+      automatic: false
+    agents:
+      platform: x86_64.metal
+      os: linux
+    plugins:
+      - docker#v3.0.1:
+          image: "rustvmm/dev:v4"
+          always-pull: true
+
+  - label: "unittests-v4.14-arm"
+    command:
+      - cargo test --features=kvm-v4_14_0
+      - cargo test --features=kvm-v4_14_0 --target aarch64-unknown-linux-musl
+    retry:
+      automatic: false
+    agents:
+      platform: arm.metal
+      os: linux
+    plugins:
+      - docker#v3.0.1:
+          image: "rustvmm/dev:v4"
+          always-pull: true
+
+  - label: "check-warnings-x86"
+    commands:
+      - RUSTFLAGS="-D warnings" cargo check --features=kvm-v4_14_0,fam-wrappers
+      - RUSTFLAGS="-D warnings" cargo check --features=kvm-v4_20_0,fam-wrappers
+      - RUSTFLAGS="-D warnings" cargo check --features=kvm-v4_14_0
+    retry:
+      automatic: false
+    agents:
+      platform: x86_64.metal
+      os: linux
+    plugins:
+      - docker#v3.0.1:
+          privileged: true
+          image: "rustvmm/dev:v4"
+          always-pull: true
+
+  - label: "check-warnings-arm"
+    commands:
+      - RUSTFLAGS="-D warnings" cargo check --features=kvm-v4_14_0,fam-wrappers
+      - RUSTFLAGS="-D warnings" cargo check --features=kvm-v4_20_0,fam-wrappers
+      - RUSTFLAGS="-D warnings" cargo check --features=kvm-v4_14_0
+    retry:
+      automatic: false
+    agents:
+      platform: arm.metal
+      os: linux
+    plugins:
+      - docker#v3.0.1:
+          privileged: true
+          image: "rustvmm/dev:v4"
+          always-pull: true