Update LICENSE and Add NOTICE

[tenthirtyam]

Update LICENSE https://github.com/vmware/terraform-provider-vra/commit/1a0285c826f493329c9de90eaf70ad52971ec58b

• Added header for terraform-provider-vra
• Added copyright notice from initial to current release years (2019-2021).

Add NOTICE https://github.com/vmware/terraform-provider-vra/commit/2bb0f2b9b5f48d9a10b59e9dadc7499e8aa42fbf

• Includes header for terraform-provider-vra
• Includes copyright notice from initial to current release years (2019-2021).
• Includes reference to licensing.

[vmwclabot]

@tenthirtyam, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit 1a0285c826f493329c9de90eaf70ad52971ec58b has a no-reply/unreachable author email address: 7771363+tenthirtyam@users.noreply.github.com
• Commit 2bb0f2b9b5f48d9a10b59e9dadc7499e8aa42fbf has a no-reply/unreachable author email address: 7771363+tenthirtyam@users.noreply.github.com

[tenthirtyam]

Each commit includes:

Signed-off-by: Ryan Johnson <7771363+tenthirtyam@users.noreply.github.com>

[tenthirtyam]

Closed. Sent email regarding suggested updates.