[DirectoryOwnership] Add TEAM/COMPONENT into OWNERS files.

We are adding COMPONENT/TEAM information into OWNERS file.

Proposal to add TEAM/COMPONENT information into OWNERS files
http://bit.ly/add-team-component-proposal
Proposal about how to get suggested component for directory.
http://bit.ly/directory-mapping-proposal
TEAM-COMPONENT mapping
http://bit.ly/component-team-mapping

Additional Information:
Component lists
https://bugs.chromium.org/p/chromium/adminComponents

BUG=679905
R=eranm@chromium.org

Review-Url: https://codereview.chromium.org/2740133004
Cr-Commit-Position: refs/heads/master@{#456143}

components/certificate_transparency/OWNERS

 eranm@chromium.org
 rsleevi@chromium.org
+
+# TEAM: net-dev@chromium.org
+# COMPONENT: Internals>Network>CertTrans

components/packed_ct_ev_whitelist/OWNERS

 eranm@chromium.org
 rsleevi@chromium.org
+
+# TEAM: net-dev@chromium.org
+# COMPONENT: Internals>Network>CertTrans