ci: add optional metrics installation into the GitHub workflow

Closes #100

Author: oleg-jukovec

.github/workflows/fast_testing.yaml

@@ -24,18 +24,34 @@ jobs:
           - '2.6'
           - '2.7'
           - '2.8'
+          - '2.10'
+        metrics-version:
+          - ''
+          - '0.10.0'
+          - '0.11.0'
+          - '0.13.0'
         coveralls: [false]
         include:
-          - tarantool: '2.8'
+          - tarantool: '2.10'
+            metrics-version: '0.13.0'
             coveralls: true
 
     runs-on: ubuntu-latest
     steps:
-      - name: Install tarantool ${{ matrix.tarantool }}
+      - name: Install tarantool ${{ matrix.tarantool }} (< 2.10)
+        if: matrix.tarantool != '2.10'
         uses: tarantool/setup-tarantool@v1
         with:
           tarantool-version: ${{ matrix.tarantool }}
 
+      # It's a temporary hack. May be removed after the fix:
+      # https://github.com/tarantool/setup-tarantool/issues/19
+      - name: Install tarantool ${{ matrix.tarantool }} (2.10)
+        if: matrix.tarantool == '2.10'
+        run: |
+          curl -L https://tarantool.io/tWsLBdI/release/2/installer.sh | bash
+          sudo apt install -y tarantool tarantool-dev
+
       - name: Clone the module
         uses: actions/checkout@v2
 
@@ -50,6 +66,10 @@ jobs:
         run: make deps
         if: steps.cache-rocks.outputs.cache-hit != 'true'
 
+      - name: Install metrics
+        if: matrix.metrics-version != ''
+        run: tarantoolctl rocks install metrics ${{ matrix.metrics-version }}
+
       - run: echo $PWD/.rocks/bin >> $GITHUB_PATH
 
       - run: make check