fix typo in figure 1.1 and 1.2

change the text "compute01-04" to "storage01-04" in figure 1.1 and 1.2
change the text "Openstack" to "OpenStack"
change the text "quantum" to "neutron"
change the text "metacata" to "metadata"

Change-Id: Iede0f738b6b6e58de3d2d5d1cfa44a1851c08335
Closes-Bug: 1327564
Closes-Bug: 1332088
Merge "fix typo in figure 1.1 and 1.2"