HDDS-1881. Design doc: decommissioning in Ozone (#1196)
HDDS-1881. Design doc: decommissioning in Ozone (#1196)

* Address comments from Anu
 * In-flight calculation is removed from the base model
 * Throttling is mentioned but will be discussed in a separated document
 * Model is improved to handle the over-replication in a specific way
 (to handle Nanda's use-case)
 * Stop conditions are defined independently from the model
 * Style of the table fragments are improved
* typo fix (thx to sodonnell)
* remove white spaces from the end of the lines
* example is restored
* minor whitespace improvement to support pdf conversion

lukmajercak/hadoop,JingchengDu/hadoop,nandakumar131/hadoop,wwjiang007/hadoop,apurtell/hadoop,steveloughran/hadoop,JingchengDu/hadoop,apache/hadoop,wwjiang007/hadoop,apurtell/hadoop,mapr/hadoop-common,wwjiang007/hadoop,mapr/hadoop-common,JingchengDu/hadoop,mapr/hadoop-common,apurtell/hadoop,lukmajercak/hadoop,JingchengDu/hadoop,steveloughran/hadoop,JingchengDu/hadoop,plusplusjiajia/hadoop,wwjiang007/hadoop,apache/hadoop,mapr/hadoop-common,mapr/hadoop-common,nandakumar131/hadoop,mapr/hadoop-common,wwjiang007/hadoop,nandakumar131/hadoop,plusplusjiajia/hadoop,wwjiang007/hadoop,wwjiang007/hadoop,nandakumar131/hadoop,plusplusjiajia/hadoop,steveloughran/hadoop,nandakumar131/hadoop,plusplusjiajia/hadoop,apurtell/hadoop,apache/hadoop,JingchengDu/hadoop,lukmajercak/hadoop,steveloughran/hadoop,apurtell/hadoop,apurtell/hadoop,plusplusjiajia/hadoop,steveloughran/hadoop,apache/hadoop,steveloughran/hadoop,plusplusjiajia/hadoop,steveloughran/hadoop,mapr/hadoop-common,apache/hadoop,apache/hadoop,lukmajercak/hadoop,nandakumar131/hadoop,lukmajercak/hadoop,plusplusjiajia/hadoop,nandakumar131/hadoop,lukmajercak/hadoop,JingchengDu/hadoop,lukmajercak/hadoop,apurtell/hadoop,apache/hadoop