Add empty files to directories otherwise git will ignore them from re…

…pository.

1. Add empty files to 'data', 'browse' and 'calibration' dirctories.
2. Correct message from errors to warnings for "github 240 test 2" to validate.feature

Refs #282 #282 Implement initial framework to be able to start developing tests
     #283 #283 Implement initial test to exercise framework
     #240 #240 RuleUnexpected error for data collection in a sub-directory
     #290 #290 Migrate subset of existing regression tests to cucumber behavioral testing

src/test/resources/features/validate.feature

@@ -37,7 +37,7 @@ Scenario Outline: Execute validate command for tests below.
  |"NASA-PDS/validate#6 1" | "github6" | 9 | "9 errors expected for FILE_NAME_HAS_INVALID_CHARS,UNALLOWED_BASE_NAME,UNALLOWED_FILE_NAME,DIR_NAME_HAS_INVALID_CHARS." | "FILE_NAME_HAS_INVALID_CHARS,UNALLOWED_BASE_NAME,UNALLOWED_FILE_NAME,DIR_NAME_HAS_INVALID_CHARS" | "src/test/resources" | "target/test" | "-R pds4.bundle -r {reportDir}/report_github6_bundle_invalid_cucumber.json -s json {resourceDir}/github6/invalid/bundle_kaguya_derived.xml" | "report_github6_bundle_invalid_cucumber.json" |
  |"NASA-PDS/validate#6 2" | "github6" | 0 | "0 errors expected for totalErrors." | "totalErrors" | "src/test/resources" | "target/test" | "-R pds4.bundle -r {reportDir}/report_github6_bundle_valid_cucumber.json -s json {resourceDir}/github6/valid/bundle_kaguya_derived.xml" | "report_github6_bundle_valid_cucumber.json" |
  |"NASA-PDS/validate#240 1" | "github240" | 0 | "0 errors expected for totalErrors." | "totalErrors" | "src/test/resources" | "target/test" | "-R pds4.bundle -r {reportDir}/report_github240_bundle_valid_cucumber.json -s json {resourceDir}/github240/valid/bundle_kaguya_derived.xml" | "report_github240_bundle_valid_cucumber.json" |
- |"NASA-PDS/validate#240 2" | "github240" | 3 | "3 errors expected for UNALLOWED_BUNDLE_SUBDIR_NAME." | "UNALLOWED_BUNDLE_SUBDIR_NAME" | "src/test/resources" | "target/test" | "-R pds4.bundle -r {reportDir}/report_github240_bundle_invalid_cucumber.json -s json {resourceDir}/github240/invalid/bundle_kaguya_derived.xml" | "report_github240_bundle_invalid_cucumber.json" |
+ |"NASA-PDS/validate#240 2" | "github240" | 3 | "3 warnings expected for UNALLOWED_BUNDLE_SUBDIR_NAME." | "UNALLOWED_BUNDLE_SUBDIR_NAME" | "src/test/resources" | "target/test" | "-R pds4.bundle -r {reportDir}/report_github240_bundle_invalid_cucumber.json -s json {resourceDir}/github240/invalid/bundle_kaguya_derived.xml" | "report_github240_bundle_invalid_cucumber.json" |
 
 # https://github.com/NASA-PDS/validate/issues/15 Verify that all name/type attribute values correspond to names denoted context products