use libmongocrypt, not ${project}

Quoting DEVPROD-20712:
> please write all artifacts to "s3://cdn-origin-libmongocrypt/libmongocrypt/"

Author: kevinAlbs

.evergreen/config.yml

@@ -81,7 +81,7 @@ functions:
     - command: s3.put
       params:
         role_arn: ${upload_arn}
-        remote_file: '${project}/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt.tar.gz'
+        remote_file: 'libmongocrypt/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt.tar.gz'
         bucket: ${upload_bucket}
         permissions: private
         visibility: signed
@@ -90,7 +90,7 @@ functions:
     - command: s3.put
       params:
         role_arn: ${upload_arn}
-        remote_file: '${project}/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix_copy}/libmongocrypt.tar.gz'
+        remote_file: 'libmongocrypt/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix_copy}/libmongocrypt.tar.gz'
         bucket: ${upload_bucket}
         permissions: private
         visibility: signed
@@ -139,7 +139,7 @@ functions:
     - command: s3.put
       params:
         role_arn: ${upload_arn}
-        remote_file: '${project}/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt-distro-packages.tar.gz'
+        remote_file: 'libmongocrypt/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt-distro-packages.tar.gz'
         bucket: ${upload_bucket}
         permissions: private
         visibility: signed
@@ -225,7 +225,7 @@ functions:
     - command: s3.get
       params:
         role_arn: ${upload_arn}
-        remote_file: '${project}/${variant_name}/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt.tar.gz'
+        remote_file: 'libmongocrypt/${variant_name}/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt.tar.gz'
         bucket: ${upload_bucket}
         extract_to: all/${variant_name}
 
@@ -329,7 +329,7 @@ functions:
       params:
         role_arn: ${upload_arn}
         local_file: release-files.tgz
-        remote_file: '${project}/python-release/${branch_name}/${libmongocrypt_s3_suffix}/${task_id}-${execution}-release-files.tar.gz'
+        remote_file: 'libmongocrypt/python-release/${branch_name}/${libmongocrypt_s3_suffix}/${task_id}-${execution}-release-files.tar.gz'
         bucket: ${upload_bucket}
         permissions: private
         visibility: signed
@@ -381,7 +381,7 @@ functions:
       params:
         role_arn: ${upload_arn}
         local_file: release-files-all.tgz
-        remote_file: '${project}/python-release/${branch_name}/${libmongocrypt_s3_suffix}/${task_id}-${execution}-release-files-all.tar.gz'
+        remote_file: 'libmongocrypt/python-release/${branch_name}/${libmongocrypt_s3_suffix}/${task_id}-${execution}-release-files-all.tar.gz'
         # The merged results are placed in the CDN bucket for releases
         bucket: ${upload_bucket}
         permissions: private
@@ -442,7 +442,7 @@ functions:
         local_file: libmongocrypt/cyclonedx.augmented.sbom.json
         permissions: private
         visibility: signed
-        remote_file: ${project}/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix}/sbom/cyclonedx.augmented.sbom.json
+        remote_file: libmongocrypt/${build_variant}/${branch_name}/${libmongocrypt_s3_suffix}/sbom/cyclonedx.augmented.sbom.json
 
 tasks:
 - name: build-and-test-and-upload
@@ -936,7 +936,7 @@ tasks:
     - command: s3.get # Download Windows build.
       params:
         role_arn: ${upload_arn}
-        remote_file: '${project}/windows-test/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt.tar.gz'
+        remote_file: 'libmongocrypt/windows-test/${branch_name}/${libmongocrypt_s3_suffix}/libmongocrypt.tar.gz'
         bucket: ${upload_bucket}
         extract_to: libmongocrypt_download
     - command: shell.exec
@@ -974,7 +974,7 @@ tasks:
     - command: s3.put # Upload tarball for GitHub Release.
       params:
         role_arn: ${upload_arn}
-        remote_file: '${project}/${build_variant}/${branch_name}/${revision}/${version_id}/libmongocrypt-windows-x86_64-${libmongocrypt_release_version}.tar.gz'
+        remote_file: 'libmongocrypt/${build_variant}/${branch_name}/${revision}/${version_id}/libmongocrypt-windows-x86_64-${libmongocrypt_release_version}.tar.gz'
         display_name: libmongocrypt-windows-x86_64-${libmongocrypt_release_version}.tar.gz
         bucket: ${upload_bucket}
         permissions: private
@@ -994,7 +994,7 @@ tasks:
     - command: s3.put # Upload signature for GitHub Release.
       params:
         role_arn: ${upload_arn}
-        remote_file: '${project}/${build_variant}/${branch_name}/${revision}/${version_id}/libmongocrypt-windows-x86_64-${libmongocrypt_release_version}.asc'
+        remote_file: 'libmongocrypt/${build_variant}/${branch_name}/${revision}/${version_id}/libmongocrypt-windows-x86_64-${libmongocrypt_release_version}.asc'
         display_name: libmongocrypt-windows-x86_64-${libmongocrypt_release_version}.asc
         bucket: ${upload_bucket}
         permissions: private
@@ -1149,9 +1149,11 @@ pre:
         # CDN S3 bucket. Otherwise, we upload to a less restricted bucket for convenience. The corresponding
         # role_arn_... values come from EVG project configuration variables stored on the EVG server
         if test "${is_patch}" = 'true' || "${project}" != 'libmongocrypt-release'; then
+          echo "Using upload bucket: mciuploads"
           upload_bucket='mciuploads'
           upload_arn='${role_arn_for_mciuploads}'
         else
+          echo "Using upload bucket: cdn-origin-libmongocrypt"
           upload_bucket='cdn-origin-libmongocrypt'
           upload_arn='${role_arn_for_release}'
         fi