fix: install openssl libs for ubuntu

web3.js/.travis.yml

@@ -1,4 +1,4 @@
-dist: xenial
+dist: bionic
 sudo: required
 language: node_js
 node_js:
@@ -21,10 +21,12 @@ notifications:
 
 before_install:
   - wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-  - sudo apt-add-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main"
-  - sudo apt-add-repository "deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main"
+  - sudo apt-add-repository "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-10 main"
   - sudo apt-get update
   - sudo apt-get install -y clang-7 --allow-unauthenticated
+  - sudo apt-get install -y openssl --allow-unauthenticated
+  - sudo apt-get install -y libssl-dev --allow-unauthenticated
+  - sudo apt-get install -y libssl1.1 --allow-unauthenticated
   - clang-7 --version
   - curl https://sh.rustup.rs -sSf | sh -s -- -y
   - PATH=$HOME/.cargo/bin:$PATH