Add EXTRA_CPAN_MODULES env var

Author: briandfoy

perl-module-macos.yml

@@ -83,7 +83,7 @@ jobs:
 # but that's not a big deal.
             - name: Install dependencies
               run: |
-                cpan -M https://www.cpan.org -T .
+                cpan -M https://www.cpan.org -T . ${{ vars.EXTRA_CPAN_MODULES }}
             - name: Run tests
               run: |
                 perl Makefile.PL

perl-module-release.yml

@@ -80,7 +80,7 @@ jobs:
 # but that's not a big deal.
             - name: Install dependencies
               run: |
-                cpanm --notest --installdeps --with-suggests --with-recommends .
+                cpanm --notest --installdeps --with-suggests --with-recommends . ${{ vars.EXTRA_CPAN_MODULES }}
 # This makes the distribution and tests it, but assumes by the time we
 # got here, everything else was already tested.
             - name: Create distro

perl-module-ubuntu.yml

@@ -126,7 +126,7 @@ jobs:
 # but that's not a big deal.
             - name: Install dependencies
               run: |
-                cpanm --notest --installdeps --with-suggests --with-recommends .
+                cpanm --notest --installdeps --with-suggests --with-recommends . ${{ vars.EXTRA_CPAN_MODULES }}
             - name: Show cpanm failures
               if: ${{ failure() }}
               run: |

perl-module-windows.yml

@@ -76,7 +76,7 @@ jobs:
             - name: Install dependencies
               run: |
                 cpan -M https://www.cpan.org -T .
-                cpan -M https://www.cpan.org -T Test::Manifest
+                cpan -M https://www.cpan.org -T Test::Manifest ${{ vars.EXTRA_CPAN_MODULES }}
             - name: Run tests
               run: |
                 perl Makefile.PL