update linux package license to BUSL-1.1 (#18192)

update copywrite.hcl to exclude MPL subdirs

.copywrite.hcl

@@ -7,6 +7,9 @@ project {
   header_ignore = [
     "command/asset/*.hcl",
     "command/agent/bindata_assetfs.go",
+    "api/**",
+    "drivers/shared/**",
+    "plugins/**",
     // Enterprise files do not fall under the open source licensing. OSS-ENT
     // merge conflicts might happen here, please be sure to put new OSS
     // exceptions above this comment.

.github/workflows/build.yml

@@ -207,7 +207,7 @@ jobs:
           version: ${{ needs.get-product-version.outputs.product-version }}
           maintainer: "HashiCorp"
           homepage: "https://github.com/hashicorp/nomad"
-          license: "MPL-2.0"
+          license: "BUSL-1.1"
           binary: "pkg/${{ matrix.goos }}_${{ matrix.goarch }}/${{ env.PKG_NAME }}"
           deb_depends: "openssl"
           rpm_depends: "openssl"