build: move e2e dependencies into e2e/go.mod

Several packages are only used while running the e2e suite. These
packages are less important to update, as the they can not influence the
final executable that is part of the Ceph-CSI container-image.

By moving these dependencies out of the main Ceph-CSI go.mod, it is
easier to identify if a reported CVE affects Ceph-CSI, or only the
testing (like most of the Kubernetes CVEs).

Signed-off-by: Niels de Vos <ndevos@ibm.com>

e2e/vendor/cel.dev/expr/CODE_OF_CONDUCT.md

@@ -0,0 +1,25 @@
+# Contributor Code of Conduct
+## Version 0.1.1 (adapted from 0.3b-angular)
+
+As contributors and maintainers of the Common Expression Language
+(CEL) project, we pledge to respect everyone who contributes by
+posting issues, updating documentation, submitting pull requests,
+providing feedback in comments, and any other activities.
+
+Communication through any of CEL's channels (GitHub, Gitter, IRC,
+mailing lists, Google+, Twitter, etc.) must be constructive and never
+resort to personal attacks, trolling, public or private harassment,
+insults, or other unprofessional conduct.
+
+We promise to extend courtesy and respect to everyone involved in this
+project regardless of gender, gender identity, sexual orientation,
+disability, age, race, ethnicity, religion, or level of experience. We
+expect anyone contributing to the project to do the same.
+
+If any member of the community violates this code of conduct, the
+maintainers of the CEL project may take action, removing issues,
+comments, and PRs or blocking accounts as deemed appropriate.
+
+If you are subject to or witness unacceptable behavior, or have any
+other concerns, please email us at
+[cel-conduct@google.com](mailto:cel-conduct@google.com).