Update .travis.yml

.travis.yml

@@ -301,11 +301,13 @@ matrix:
             - wget
             - environment-modules
       script:
+        - apt install environment-modules
         - wget -q https://developer.arm.com/-/media/Files/downloads/hpc/arm-instruction-emulator/21-0/ARM-Instruction-Emulator_21.0_AArch64_Ubuntu-18.04_aarch64.tar.gz
         - tar zxvf ARM-Instruction-Emulator_21.0_AArch64_Ubuntu-18.04_aarch64.tar.gz
         - cd arm-instruction-emulator_21.0_Ubuntu-18.04_aarch64
         - sudo ./arm-instruction-emulator_21.0_Ubuntu-18.04.sh -a
         - cd ..
+        - module avail
         - module load armie21/21.0
         - echo $PATH
         - travis_wait 45 make TARGET=A64FX CROSS=1 CC=gcc-10 FC=gfortran-10 HOSTCC=gcc-10 DEBUG=1