Put up CNSC ads (May 1)

[cjyabraham]

8 weeks prior to the start of the conference, deploy the following ads:

• [x] CNCF hello bar ?utm_source=www&utm_medium=subpage&utm_campaign=kubeconna24&utm_content=hello-bar

• [x] CNCF big banner from Events infrastructure to appear on the CNCF.io homepage ?utm_source=www&utm_medium=all&utm_campaign=kubeconna24&utm_content=big-banner

• [x] Landscape banner ?utm_source=landscape&utm_medium=all&utm_campaign=kubeconna24&utm_content=slim-banner

• [x] Jobs sidebar ad ?utm_source=jobs&utm_medium=homepage&utm_campaign=kubeconna24&utm_content=sidebar-banner

• [x] Community hello bar ?utm_source=community&utm_medium=homepage&utm_campaign=kubeconna24&utm_content=hello-bar

[cjyabraham]

done