Update memory requirement from 8GB to 9GB

With the 4.4 release, it is impossible to run the cluster in a
sane way using 8GiB of memory. In OpenShift 4.4, the required
system memory for the kubelet systemd service was raised from
500MiB to 1GiB. Also, the memory requested by some operators has
increased compared to 4.3.

Author: praveenkumar

docs/source/topics/proc_configuring-the-virtual-machine.adoc

@@ -48,5 +48,5 @@ Values for available memory are set in mebibytes (MiB).
 One gibibyte (GiB) of memory is equal to 1024 MiB.
 ====
 +
-The default value for the `memory` property is `8192`.
+The default value for the `memory` property is `9216`.
 The amount of memory to assign must be greater than or equal to the default.

pkg/crc/constants/constants.go

@@ -12,7 +12,7 @@ import (
 const (
 	DefaultName   = "crc"
 	DefaultCPUs   = 4
-	DefaultMemory = 8192
+	DefaultMemory = 9216
 
 	DefaultSSHPort = 22
 	DefaultSSHUser = "core"

test/integration/features/config.feature

@@ -17,23 +17,23 @@ Checks whether CRC `config set` command works as expected in conjunction with `c
         Examples: Config settings on Mac 
             | property         |    value1 |            value2 |
             | cpus             |         4 |                 3 |
-            | memory           |      8192 |              4096 |
+            | memory           |      9216 |              4096 |
             | nameserver       | 120.0.0.1 |   999.999.999.999 |
             | pull-secret-file |      /etc | /nonexistent-file |
 
         @linux
         Examples: Config settings on Linux
             | property         |    value1 |            value2 |
             | cpus             |         4 |                 3 |
-            | memory           |      8192 |              4096 |
+            | memory           |      9216 |              4096 |
             | nameserver       | 120.0.0.1 |   999.999.999.999 |
             | pull-secret-file |      /etc | /nonexistent-file |
 
         @windows
         Examples: Config settings on Windows
             | property         |    value1 |            value2 |
             | cpus             |         4 |                 3 |
-            | memory           |      8192 |              4096 |
+            | memory           |      9216 |              4096 |
             | nameserver       | 120.0.0.1 |   999.999.999.999 |
             | pull-secret-file |    /Users | /nonexistent-file |