kubeadm GA blog post (#11462)

* kubeadm GA blog post

* Change file name and add post metadata

* Update CSS for blog post tables

* More formatting and wording changes

* Change build process to allow for displaying future blog posts

* Add links to command documentation

* Change blog post date and address PR feedback

* More wording updates

sass/_base.sass

@@ -126,6 +126,31 @@ header
 	background-repeat: no-repeat
 
 
+// Blog post tables
+.blog-content
+	table
+		max-width: 100%
+		border: 1px solid #ccc
+		border-spacing: 0
+		margin-top: 30px
+		margin-bottom: 30px
+
+		thead
+			border-bottom: 2px solid #ccc
+
+			tr
+				th
+					padding: .5rem
+					font-size: 1.5rem
+
+		tbody
+			tr
+				td
+					padding: .5rem
+					border-bottom: 1px solid #ccc
+					border-left: 1px solid #ccc
+					padding-right: 5rem
+
 #docs
 	.flyout-button
 		position: fixed