zabbix: update to 5.0 LTS

Updated to 5.0 LTS version.

Removed 120-uclibc-res.patch
Frontend moved from frontend to ui
zabbix-proxy added libevent dependencie
refresh patches

Compile tested: aarch64 cortex-a53
Run tested: aarch64 cortex-a53

Signed-off-by: Scott Roberts <ttocsr@gmail.com>

admin/zabbix/patches/010-change-agentd-config.patch

@@ -27,7 +27,7 @@
  ### Option: LogFileSize
  #	Maximum size of log file in MB.
  #	0 - disable automatic log rotation.
-@@ -117,6 +114,7 @@ Server=127.0.0.1
+@@ -138,6 +135,7 @@ Server=127.0.0.1
  # Range: 0-100
  # Default:
  # StartAgents=3
@@ -35,7 +35,7 @@
  
  ##### Active checks related
  
-@@ -132,8 +130,6 @@ Server=127.0.0.1
+@@ -153,8 +151,6 @@ Server=127.0.0.1
  # Default:
  # ServerActive=
  
@@ -44,7 +44,7 @@
  ### Option: Hostname
  #	Unique, case sensitive hostname.
  #	Required for active checks and must match hostname as configured on the server.
-@@ -143,8 +139,6 @@ ServerActive=127.0.0.1
+@@ -164,8 +160,6 @@ ServerActive=127.0.0.1
  # Default:
  # Hostname=
  
@@ -53,7 +53,7 @@
  ### Option: HostnameItem
  #	Item used for generating Hostname if it is undefined. Ignored if Hostname is defined.
  #	Does not support UserParameters or aliases.
-@@ -262,8 +256,8 @@ Hostname=Zabbix server
+@@ -305,8 +299,8 @@ Hostname=Zabbix server
  # Include=
  
  # Include=/usr/local/etc/zabbix_agentd.userparams.conf