ci: update AA & CDH workflow

Attestation Agent will be built with all attesters plugin enabled in
kata's rootfs, so we'd better test this build option in CI workflow to
ensure the musl static link works.

For Confidential Data Hub, by default RESOURCE_PROVIDER will be set to
enable all plugins and currently kbs,sev thus we do not to explicitly
specify them.

Signed-off-by: Xynnn007 <xynnn@linux.alibaba.com>

.github/workflows/aa_basic.yml

@@ -65,13 +65,13 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y libdevmapper-dev
 
-      - name: Build and install with default features
+      - name: Gnu build and install with default features
         run: |
           make && make install
 
-      - name: Musl build with none platform
+      - name: Musl build with all platform
         run: |
-          make LIBC=musl ATTESTER=none
+          make LIBC=musl
 
       - name: Run cargo test
         uses: actions-rs/cargo@v1

.github/workflows/cdh_basic.yml

@@ -54,7 +54,7 @@ jobs:
 
       - name: Musl build
         run: |
-          make LIBC=musl RESOURCE_PROVIDER=kbs,sev
+          make LIBC=musl
 
       - name: s390x build
         run: