chore: use published ipfs-interop module instead of master branch

Changes the CI pipeline to use a published version of the `ipfs-interop`
module instead of whatever's the HEAD of master in order to control
the versions of what's being tested.

Otherwise it becomes hard to release breaking changes in an ordered
fashion.

.circleci/config.yml

@@ -170,36 +170,20 @@ jobs:
       - *make_out_dirs
       - attach_workspace:
           at: /tmp/circleci-workspace
-      - run:
-          name: Cloning
-          command: |
-            git clone https://github.com/ipfs/interop.git
-            git -C interop log -1
-      - restore_cache:
-          keys:
-            - v2-interop-{{ checksum "~/ipfs/go-ipfs/interop/package-lock.json" }}
-            - v2-interop-
       - run:
           name: Installing dependencies
           command: |
-            npm install
-          working_directory: ~/ipfs/go-ipfs/interop
-      - save_cache:
-          key: v2-interop-{{ checksum "~/ipfs/go-ipfs/interop/package-lock.json" }}
-          paths:
-            - ~/ipfs/go-ipfs/interop/node_modules
-      - run:
-          name: Installing reporting tools
-          command: |
-            npm install --save-dev mocha-circleci-reporter@0.0.3
+            npm init -y
+            npm install ipfs@^0.47.0
+            npm install ipfs-interop@^1.0.0
+            npm install mocha-circleci-reporter@0.0.3
           working_directory: ~/ipfs/go-ipfs/interop
       - run:
           name: Running tests
           command: |
             mkdir -p /tmp/test-results/interop/
             export MOCHA_FILE="$(mktemp /tmp/test-results/interop/unit.XXXXXX.xml)"
-            node_modules/.bin/mocha --reporter mocha-circleci-reporter \
-              $(sed -n -e "s|^require('\(.*\)')$|test/\1|p" test/node.js | circleci tests split)
+            node_modules/.bin/ipfs-interop -- -t node -f $(sed -n -e "s|^require('\(.*\)')$|test/\1|p" node_modules/ipfs-interop/test/node.js | circleci tests split) -- --reporter mocha-circleci-reporter
           working_directory: ~/ipfs/go-ipfs/interop
           environment:
             IPFS_REUSEPORT: false