Pre salted images from Netmanagers

Table 1. Collected on 2019-09-28

		1	2	3	4	5	6	7
		dev py3	dev py2	19.2 py3	19.2 py2	18.3 py3	18.3 py2	17.7 py2	Count	EOL	Rem.
A	debian-10	MPX		___	M--		M--		3	30/06/24	1,737
B	debian-9	U--		UP-	U--		MP-	M--	5	30/06/22	1,006
C	debian-8						U--	UP-	2	30/06/20	276
D	ubuntu-18.04	MP-		MPX	M--		M--		4	30/04/23	1,310
E	ubuntu-1804			U--					1	^	^
F	ubuntu-16.04						MP-	MP-	2	30/04/21	580
G	ubuntu-1604						U--		1	^	^
H	ubuntu-14.04								0	30/04/19	-151
I	centos-8	___		___	___		___		0	30/09/29	3,655
J	centos-7	MP-		MP-	M--		MP-		4	30/06/24	1,737
K	centos-6						M--	MPX	2	30/11/20	429
L	fedora-30	MP-		MP-		___		___	2	31/05/20	246
M	fedora-29	U--		U--	U--	M--	UPX	MP-	6	22/11/19	55
N	fedora-28						U--	U--	2	28/05/19	-123
O	opensuse-leap-15.1	MP-		MP-	M--		MPX	MP-	5	30/11/20	429
P	opensuse-leap-15.0								0	30/11/19	63
Q	opensuse-leap-42						U--	U--	2	01/07/19	-89
R	opensuse-423						U--		1	^	^
S	amazonlinux-2		MP-		MPX		MP-	MP-	4	01/01/23	1,191
T	amazonlinux-1								0	???	???
U	arch-base-latest		MP-		MPX		MP-	MP-	4	---	---
	Count	7	2	7	8	1	15	10	50

Explanation of the 3-character code (e.g. MP-)

1. First character:

   1. M: Maintained

   2. U: Unmaintained

2. Second character:

   1. P: Included in main overall list of platforms used throughout Travis/Cirrus matrices

   2. -: Not included in list of platforms

3. Third character:

   1. X: Included in platforms enabled by default in all matrices

   2. -: Normally commented out in all matrices

4. Special case (___):

   1. Possible/planned upcoming images